SMARAD Activity Report 2011

Centre of Excellence in Smart Radios and Wireless Research Antti Räisänen (editor)

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Contents

1 Introduction to SMARAD 2 Research teams 3 Highlights of SMARAD research in 2011 - Future Radio and Antenna Systems - Cognitive Radio - Millimetre Wave and THz Techniques - Sensors - Materials and Energy 4 Participation in European projects 5 SMARAD funding 6 SMARAD personnel during 2011 7 Visitors to SMARAD 8 Visits from SMARAD to foreign institutes 9 Post-graduate degrees 10 Publications 11 Other scientific activities of SMARAD members

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1. Introduction to SMARAD Centre of Excellence in Smart Radios and Wireless Research (SMARAD) In 2001 the Academy of Finland appointed SMARAD with the name “Smart and Novel Radios Research Unit” as one of the centres of excellence in research for the period 2002–2007. In 2006 the Academy announced its decision that the renewed SMARAD (“Centre of Excellence in Smart Radios and Wireless Research”) was appointed a Centre of Excellence for years 2008–2013. According to the Academy: “Centres of excellence are research units or researcher training units which comprise one or more high-level research teams that are at or near the international cutting edge of research in their field. They will also share a common set of objectives and work under the same management. Funding for centres of excellence comes not only from the Academy, but also from the host organisations of the units concerned, and possibly from other funding bodies, such as Tekes, business enterprises and foundations. A centre of excellence may be a unit of research teams working at both universities and research institutes.” Currently there are altogether 33 Centres of Excellence: the Academy Board has appointed 18 centres of excellence for the national centre of excellence programme in 2008–2013 and 15 for the years 2012–2017. The current SMARAD was formed in 2006 by the Radio Laboratory, the Electronic Circuit Design Laboratory and the Signal Processing Laboratory of the Department of Electrical and Communications Engineering, Helsinki University of Technology (TKK). After the restructuring of the TKK organization, SMARAD involves research groups from three departments, namely the Department of Radio Science and Engineering, Department of Micro and Nanosciences, and Department of Signal Processing and Acoustics, all within the Aalto University School of Electrical Engineering. SMARAD provides world-class research and education in RF, microwave and millimetre wave engineering, in integrated circuit design for multi-standard radios as well as in wireless communications. In microwave and millimetre wave engineering it is also the only research unit in Finland. SMARAD is a contributor to MilliLab, ESA External Laboratory (a joint institute between VTT and Aalto University School of Electrical Engineering). The total number of employees within the research unit is about 90 including about 30 senior scientists and about 40 doctoral students and several students working on their Master thesis. The unit conducts basic research but at the same time maintains close co-operation with industry. Novel ideas are applied in design of new communication circuits and platforms, transmission techniques and antenna structures resulting also in patents and invention reports. ‘Smart’ in SMARAD’s name refers to adaptability of antennas, radio devices, or materials to RF signals or fields. SMARAD has a well-established network of co-operating partners in industry, research institutes and academia worldwide. It coordinates a few EU projects. The funding sources of SMARAD are also diverse including the Academy of Finland, Tekes, and the Finnish and foreign telecommunications and semiconductor industry. As a by-product of this research SMARAD provides highest-level education and supervision to graduate students in the areas of radio engineering, circuit design and communications through Aalto University and Finnish graduate schools such as GETA. SMARAD Principal Investigators are: Prof. Antti Räisänen, chairman: Millimetre wave and THz techniques Academy prof. Visa Koivunen, vice-chair: Communications and statistical signal processing Prof. Kari Halonen: Electronic circuit design Prof. Sergei Tretyakov: Advanced artificial electromagnetic materials and smart structures Prof. Pertti Vainikainen: RF applications in mobile communications and non-destructive testing

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Members of the Scientific Advisory Board of SMARAD are (2011): Prof. Danielle Vanhoenacker-Janvier, Université Catholique de Louvain (UCL), Belgium Prof. Björn Ottersten, Royal Insitute of Technology Stockholm (KTH), Sweden Professor Heli Jantunen, Oulu University Professor, Vice-Rector Heikki Mannila, Aalto University Dr Ritva Dammert, Aalto University Dr Kati Sulonen, Academy of Finland Dr Hannu Kauppinen, Nokia Research Center Dr Jani Ollikainen, Nokia Research Center

2. Research teams 1. Millimetre wave and THz techniques. The research group is led by Prof. Antti Räisänen.

There are 3 other senior researchers with a doctoral degree (Dr. Juha Mallat, Dr. Juha Ala-Laurinaho, and Dr. Dmitri Lioubtchenko) and 6 researchers working towards their doctoral degree. In addition, Prof. Constantin Simovski works part-time in this group.

2. Advanced artificial electromagnetic materials and smart structures. This research group is led by Prof. Sergei Tretyakov. Prof. Constantin Simovski works in this group. The research group includes 3 other senior researchers, and 5 researchers working towards their doctoral degree.

3. RF applications in mobile communications and non-destructive testing. This research group is led by Prof. Pertti Vainikainen. There are 6 other senior researchers with a doctoral degree (Dr. Katsuyuki Haneda, Dr. Jari Holopainen, Dr. Clemens Icheln, Dr. Veli-Matti Kolmonen, Dr. Tommi Laitinen, and Dr. Valeri Mikhnev) and 9 researchers working towards their doctoral degree.

4. Communications and statistical signal processing. The research group is led by Academy prof. Visa Koivunen. Prof. Risto Wichman works full time in this research group. In addition, there are 5 other senior researchers with a doctoral degree in the group. There are 9 researchers working towards their doctoral degree.

5. Electronic circuit design. The research group is led by Prof. Kari Halonen. Prof. Jussi Ryynänen works full time in this research group. The group includes 2 other senior researchers with a doctoral degree and 11 researchers working towards their doctoral degree.

3. Highlights of SMARAD research in 2011 The Centre of Excellence in Smart Radios and Wireless Research, SMARAD, specialises in research into RF, microwave and millimetre wave techniques, integrated circuit design for multi-standard radios as well as wireless communications. Areas of special interest include RF techniques for wireless data communications, radio channel modelling and measurement, new and smart materials and structures, smart (adaptive) antennas, integrated circuit design for multi-standard radios, receiver structures and architectures and the signal processing algorithms they require. The results will have practical application especially in future wireless communication systems. In the following the SMARAD research in 2011 is described under the following titles: Future radio and antenna systems, Cognitive radio, Millimetre wave and THz techniques, Sensors, and Materials and energy.

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Multiantenna systems. The goal is to derive transceivers and transmission schemes that exploit all the degrees of freedom in radio channels to achieve high spectral efficiency, high system throughput, extended range as well as powerful interference cancellation capability. In general, practical multiantenna systems require some channel state information in the transmitter, because otherwise interference between different data streams and users becomes too large in the receiver. The main research problem is then to optimize the tradeoff between the system performance and the required feedback information from receivers to transmitters. In case of cooperative and multipoint MIMO techniques, multiple transmitters simultaneously transmit to a user, which is especially advantageous when the user is located on the edge of the coverage area. With multiuser MIMO techniques the same channel resource is shared with multiple network nodes aiming to further improve the throughput of network. Concerning heterogeneous wireless systems and spectrum sharing, cooperative and multiuser MIMO algorithms should operate in decentralized manner assuming that network nodes possess only limited information on the state of the system. These kind of distributed techniques are further elaborated within wireless sensor networks. Distributed and resource efficient parameter estimation in wireless sensor networks. The objective is to develop distributed detection and estimation schemes for detecting an event and estimating and tracking an unknown common parameter, e.g., temperature, level of water contaminants, or a target position, using multiple displaced sensors. Signal collection through a distributed network of sensor nodes improves robustness of performance and reliability of the network due to redundancy and provides spatial diversity due to multiple viewing angles. In the particular case of sensor networks, the bandwidth and power requirements are closely linked to whether the acquired data is processed in a centralized or a decentralized manner, see Fig. 7. In the former approach, signals from all sensor nodes are processed jointly in one centralized fusion center, thus, facilitating the use of battery operated and low-cost sensors. For a large network, the excessive amount of data can make central processing computationally prohibitive, and may require communications over longer range which leads to reduced battery life. Comparing to the centralized estimation approach, decentralized (or distributed) detection and estimation reduces the amount of data that each estimator needs to process by introducing collaboration between neighboring nodes in the network. Collaboration improves algorithm robustness, e.g., in case of sensor failures; however, it increases bandwidth and power requirements. As an alternative to classical approaches, this research project aims to develop distributed estimation algorithms with sensors that can make discerning use of received data, thereby providing more informative estimates and thriftier use of resources like power and bandwidth. Thus the nodes should update the parameter estimates only when needed and cooperate only when such an action improves awareness. The amount of data transmitted in a sensor network can be effectively reduced via censoring where data is transmitted only if it is informative. Such algorithms will lead to improved performance, prolonged lifetime for the sensor nodes, and improved reliability of the entire network.

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16

Implementation issues in spectrum sensing and exploitation. The quality of the spectrum sensor decisions and decision statistics, and the decision frequency are the key parameters in optimization of the spectrum utilization and the overall performance of the cognitive radio system. The most important properties of a single detector entity are, firstly the ability to make the decisions quickly and reliably, and secondly the ability to observe a wide frequency range and multiple primary systems simultaneously. In addition, the implementation must be optimized such that the change of primary signal under detection has as small as possible effect on the receiver front-end parameters. Reconfiguring the front-end takes time and slows down the hopping between different bands and signal types. Spectrum sensing applications also set high requirements for RF hardware (wide bandwidth, wide tuning range, high dynamic range, high linearity), which is a limiting factor in current implementations. Sensing algorithm should be selected so that it enables the flexible configuration of the sensor parameters with software. In order to enable the sensing of multiple systems simultaneously, the functionality of the DSP implementation should be independent of the sampling rate and signal bandwidth of the system to be detected. While targeting a battery operated application it is of utmost importance to minimize the power consumption of the sensor both at circuit and architectural level. Therefore, in the implementation of a simultaneous multisystem spectrum sensor, one should lead up to a solution in which the amount of hardware does not increase linearly with the number of systems under detection (or even with number of transmit/modulation parameters in a single system). In addition to spectrum sensing functionalities, DSP may have to implement support functions such as additional filtering and gain control. As the functional requirements on the DSP domain increase, it becomes more and more important to optimize the energy and cost efficiency of the realized circuits. While performing spectrum sensing, it might also be beneficial to obtain additional information for example about the adjacent channels and their power levels. For example in some cases, presence of a strong signal on the channel adjacent to the one under detection could affect the reliability of the detection results. In addition, this knowledge could be to adjust RF functions in the receiver. In hardware side the development of cognitive radio has focused on developing energy efficient RFICs and demonstrating sensing algorithms in various different environments. The demonstrations have focused on defining the limitations of the RF hardware to the detection and detector performance. The over-the-air measurements and the measurements in the controlled environment show that the different nonlinearities in the RF hardware can easily decrease the reliability of the spectrum sensor. In some extent the developed feature detectors can impove the detection reliability when compared to energy detectors. However, still advances in impoving the linearity at RF and analog parts must be made to increase the reliability of the spectrum measurements. In the detector side a comprehensive study on diffetent algorithms has been done in addition with algorithm development to find optimal algorithms suited for mobile environment. The focus on algorithm implementation has been on finding implementations that lead to small implementation size together with low power consumption. In RFICs the focus has been on finding solutions that improve the aforementioned RF linearity and also support wide variety of different frequency bands. Fig. 16 illustrates demonstarion board that enables over the air measurements. White spaces. Secondary usage of TV white-spaces is an emerging application of cognitive radio techniques, where unutilized or underutilized spectrum reserved for digital terrestrial television is allocated to wireless communications. Spectrum sensing can be used to determine the level of TV signals in a specific location, but sensing alone is not able to provide information on the frequency planning of the network, i.e., it is not possible to know whether a particular TV frequency is planned for use in the measured location. Thus, sensing must be complemented with a geo-location database. We develop techniques to improve the secondary usage of TV white spaces by combining the information from geo-location database and radio propagation modeling with measurements from white-space devices.

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reflectarramaging apped on a sil

red to metaof using stants into it. or 220 – 325compared t. The schemwer sensor r travelling

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r beam stectivity. Redhe reflectionupling. A v

sted with anshown in Fiam. The behe new shapns was dem

f the designeation pattern

ay. A 120-Gplications isicon wafer

22

al losses, espandard micr

5 GHz was to other di

matic imageintegrated in the DRW

ntegrated phintegrated iriodically pntrol the ph

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monstrated w

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above 100 iconductor

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23

ch a way, threflectarra

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Fig. 29simulat ExtractIn conneffectivmethodmateriabased odoes nosamplestechniqueffect o 60 GHztechniqudesigneuse of mefficienfrequenMEMS transmiwith difmanufaradiatiomeasurethe -10

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ments were in the Orangn and the m

24

terial under) and compis has been d

e simulatedtant and lo

ng method. urement anermittivity oobtained to b

nsmission cofor unknow

al paramete have also tsured reflecation relateed a novel w

Weir (NRWis therefore

at would oththe NRW ematerial para

r beam steeloss at 60 Hz frequen

ubstrate mats comparedocess couldwork passivtrate beam gle antenna using a prop

performedge labs, la T

maximum m

r test. Similarison is thdone first fo

d reflectionoss tangentFig. 29 sho

nd simulatioof 2.0 and be 2.4 and l

oefficient phwn polymer.

ters from rtheoreticallyction and tred to the eway to over

W) techniquee capable ofherwise cauxtraction teameters.

ering applicGHz. A tw

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pe station and with th

Turbie, Franmeasured re

ar situationhen made beor Teflon (P

n and transt are compows the tranon. Using lloss tangenoss tangent

b)hase for Tef

reflection-try studied alransmissionelectrical thcome this li

e, the propof extracting use problemechnique ha

cations. Bewo elementing micromr the antennk silicon pro

manufacturshifters usihe prototypFig. 30). Thnd a vector he 3D on-nce. The maalized gain

n is also simetween the PTFE), and

smission cpared with nsmission coleast squarnt 0.003 fot 0.06.

) eflon and b)

ransmissiolgorithms fon coefficienhickness of imitation. Aosed extrac

g material pams in the Nas been use

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ure phase shing differe

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network an-wafer radanufactured n is 6.0 dBi

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oefficients the measu

oefficient (Sre error fittor Teflon. T

measured a

n coefficienor extractionts. The knothe measu

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ed to study

g is one of array has bechnology. Ts provides hillimeter w

hifters basedent lengths antenna arr

pedances of nalyzer and diation patt

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th a and

for a

for ured S21) ting The

and

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f the been The high

wave d on

of rays f the

the tern ulfil nnas

25

were designed in co-operation with University of Nice-Sophia-Antipolis, France and the prototypes were manufactured in LAAS-CNRS, University of Toulouse, France.

Fig.30: A photo of the manufactured antenna prototype. 3.4 Sensors Microwave visualization of objects buried in non-transparent media. Subsurface radar sensing is aimed at detection, localization and identification of versatile objects in non-metallic media. Among those tasks, detection of pipes, voids, mines in soil, rebars and cracks in civil engineering structures, tumours in biological tissues are worth noting. A new signal processing approach based on expanding the subsurface radar data into separate B-scans for amplitude and phase and their subsequent assembly in the common image using transformations of signal amplitude → intensity of the pixel and signal phase → color of the pixel has been proposed. The idea of the method is based on the fact that amplitude of the wideband signal reflected from the buried object indicates presence of the object at some depth while the phase shift at the act of reflection depends on the contrast of dielectric properties between the object and surrounding medium and therefore can characterize it. Thus, the image where intensity of the pixel is related to amplitude of reflected signal and color to its phase can be used for both detection of the objects and their discrimination. Some results of microwave visualization of objects buried in sandbox using frequency-swept signals in the range of 1.3 to 6.5 GHz and UWB tapered-slot antennas are shown in Fig. 31. As seen in Fig. 31, both detection and differentiation of buried objects is possible with the use of the proposed method.

Fig. 31: a) Void in the sandbox, b) anti-personnel plast mine (PMN) simulant in the sandbox. Ground surface is seen at zero depth, bottom of the box at the depth of 40 cm, objects have been buried at 10 cm.

 

1 mm

ground surface ground surface

void mine simulant

bottom of the box bottom of the box

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s July 2012

26

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28

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29

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30

he electrombeen develon first-orderped theory c

reveal an a known frof-consistentnhancemennphysical d

from plasmn of a metathe visible is the lattice done a d

anar array, all possible negative ref

gative-refrat 360 THz wttice of sucolute value

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Fig. 42:space gmediumnormalilimitatioabsencecorresp

ng as an arrquadrupole

ased on CIGbased on siin 2011 wit

: (left) – Thcell. The uppo the energtration of th

m thick CIGution at the trated outsiompared to

material fooltaic systeelectric cele of the head-infrared rans of nanomred to the cant increase

: (a) and (b)gap which

m); (c) – theized to thaons). Red ce. The oneponds to the

ray of new response. T

GS). Prelimiilicon). A pth the purpo

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upper inteide the met the solar c

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b) – possibleis small en

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erface of thetal elementsell without A

tive thermTPVS) conusing the

compared toctically hold

his restrictioctric systemp e.g. from 1

e arrangemenough to suof the radiaby propag

esponds to tin comparennelling acro

31

nas which pcoverings

s were also oject fundedxperimental

al distributioer superstra

mediate laythe energy

rode below e photo-abss. This featARC and 1

mo-photovonverting thso-called po the valueds only whon makes Nms. We ha100 nm to 1

ent of nanotupport the ative heat trgating wavethe presenced to the boss 1 µm ga

possess bothwere simulobtained fo

d by Aalto C demonstrat

on at 370 THate. The con

yer is the conversionit is not s

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oltaic systee heat intophoton tunn restricted b

hen the gap NF TPVS

ave suggest µm keepin

tubes in thephoton tun

ransfer acroes only (obce of nanotblack-body ap.

h substrate-lated in 201or a solar ceCenter of Etion of our e

THz in the cencentration100 nm th. The lowershown); (riyer. It is cles in the strored to the ca

ems. So-cao electricitneling whicby the backbetween twtoo expens

ted a metang the same

(c) e system (d1 nnelling frooss one micbeying thertubes, dashe

transfer i

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entral crossn of the fieldhick p-doper layer is wight) – Theear that therong overalase when AR

alled near-ty more efch leads tok-body limiwo media issive and noamaterial th

level of the

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urship has bFig. 41).

s section of d in it does ed CIGS.

weakly n-dope same spae hot spots l enhancemRC is presen

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0 nm thick fbes to the cThe spectrumthe black-burve – to th

of nanotu

and olar ible

been

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ment nt).

mo-than

matic r, in as a tive the

fer.

free cold m is ody heir ubes

32

Our metamaterial does not support neither electron nor phonon heat transfer which could suppress the photovoltaic conversion in the cold medium. The micron gap can be implemented in a relatively inexpensive way with precision 50 nm over the area 1 mm2. Such cells can be unified in a large panel. The implementation of our idea can result in a breakthrough in the thermo-photovoltaics, especially if we manage to obtain similar results in the near IR range, where the micron-gap thermo-photovoltaic systems comprising our material will make possible the waste heat conversion with the same overall efficiency as that of near-IR solar cells (i.e. up to 20-25%). Presently, the best micron-gap thermo-photovoltaic systems based on Ge or CdTe demonstrate the efficiency 3% (alone) or 6% (combined with wafer solar cells). The idea and corresponding results are illustrated by Fig. 42.

4. Participation in European projects Co-ordination: TUMESA SMARAD (Aalto University Department of Radio Science and Engineering) was the coordinator of project TUMESA (MEMS Tuneable Metamaterials for Smart Wireless Applications), which was funded by the European Community within Seventh Framework Programme, Information and Communication Technologies theme. Prof. Antti Räisänen was the Chairman of the Governing Board and Dr. Dmitry Chicherin was the Project Manager until April 2011, and during the remaning time Dr. Juha Ala-Laurinaho was the Project Manager. In addition to Aalto University, the project partners were KTH - Royal Institute of Technology, University of Rennes I, Autocruise S.A. and MicroComp Nordic AB. The objective of the project was to develop components and sub-systems based on microelectromechanical systems (MEMS) in order to provide a cost-efficient and high-performance technology platform for millimetre-wave automotive and industrial radar and future high-capacity communication systems. More precisely, the main goals of the project were: to develop novel on-chip phase shifting and beam-steering devices based on MEMS tuneable high-impedance surfaces; to integrate developed phase shifting components in novel space-efficient antenna arrays on a single chip; to elaborate novel concepts of implementation the beam-steering devices and antenna arrays in cost-efficient radar sensor and future high-capacity wireless communication systems and evaluate fabricated prototypes at a system level. Most of the projects goals were achieved. Duration of the project was 3 years and 4 months, from 1 June 2008 to 30 September 2011. The project website is http://radio.tkk.fi/tumesa. Participation: METACHEM From September 2009, SMARAD has been active in the FP7 Research Project METACHEM, Nano-chemistry and self-assembly routes to metamaterials for visible light. Prof. Simovski is responsible for the theoretical part of WP1 of this project and represents the contribution of Aalto into it. WP1 is considered as a step towards a 3D-isotropic metamaterial, operating in the visible range and demonstrating epsilon-near-zero, mu-near-zero, and negative refraction properties without strong spatial dispersion. ARTEMOS From April 2010, SMARAD has been active in ENIAC research project ARTEMOS (Agile RF Transceivers and Front-Ends for Future Smart Multi-Standard Communications Applications). This project aims at developing architecture and technologies for implementing agile radio frequency

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(RF) transceiver capacities in future radio communication products. These new architecture and technologies will be able to manage multi-standard (multi-band, multi-data-rate, and multi-waveform) operation with high modularity, low-power consumption, high reliability, high integration, low costs, low PCB area, and low bill of material (BOM). Prof. Jussi Ryynänen, is reponsible of developing direct delta-sigma receiver in WP4 of this project. RODIN From 2010, SMARAD has been active in the FP7 Reseach Project RODIN (Suspended Graphene Nanostructures). The RODIN-project is organized around the concept of suspended single-and few-layer graphene nanostructures and annealed diamond-like carbon films. In particular project focuses on engineering and measuring the mechanical and electromechanical properties. Prof. Jussi Ryynänen, is reponsible of evaluating electrical performance of developed mechanical resonators.

5. SMARAD funding In 2011 SMARAD funding was as follows: RAD SA MNT Total Univ. budget (incl. extra funding for CoE) 1.216.000 404.000 511.000 2.131.000 External (competitive) funding 1.940.000 965.000 1.613.000 4.518.000 Total 3.156.000 1.369.000 2.124.000 6.649.000 External funding from the following sources:

- Academy of Finland (CoE) 351.000 136.000 79.000 566.000 - Academy of Finland 519.000 481.000 421.000 1.421.000 - TEKES 418.000 68.000 309.000 795.000 - GETA 83.000 25.000 67.000 175.000 - ESA 40.000 - - 40.000 - EU 305.000 1.000 98.000 404.000 - Finnish industry and other domestic 224.000 254.000 639.000 1.117.000

6. SMARAD personnel during year 2011 In the Department of Radio Science and Engineering: Ala-Laurinaho, Juha, D.Sc. (Tech.) Senior scientist Albooyeh, Mohammad, M.Sc. Doctoral student from February 9th Alitalo, Pekka, D.Sc. (Tech.) Post-doctoral researcher Amin, Amee, B.Sc. Research assistant from June 1st to August 31st Bin Abdullah Al-Hadi, Azremi, M.Sc. Doctoral student Chicherin, Dmitry, Lic.Sc. (Tech.) Doctoral student until April 30th Dahlberg, Krista, Lic.Sc. (Tech.). Doctoral student Du, Zhou, M.Sc. Doctoral student Ermolov, Kirill, Mr. Research assistant from June 1st to August 31st Generalov, Andrey, M.Sc. Doctoral student Geng, Suiyan, Lic.Sc. (Tech.) Doctoral student from September 1st to October 31st Haapiainen-Laine, Sari, B.Sc. Project secretary Haimakainen, Johannes, Mr. Research assistant from June 1st to October 31st

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Haneda, Katsuyuki, D.Sc. Post-doctoral researcher Hashemi, Seyedmohammade, M.Sc. Stipendiate from October 17th Hernandez Zamora, Bruno, B.Sc. Erasmus stipendiate from October 17th Holopainen, Jari, D.Sc. (Tech.) University teacher Huang, Yi, B.Sc. Research assistant from June 1st to August 31st Icheln, Clemens, D.Sc. (Tech.) Senior lecturer Ilvonen, Janne, M.Sc. (Tech.) Doctoral student Järveläinen, Jan, M.Sc. (Tech.) Doctoral student Kahra, Eino, Mr. Laboratory technician Kari, Henri, Mr. Research assistant from June 1st to August 31st Karilainen, Antti, M.Sc. (Tech.) Doctoral student Karttunen, Aki, Lic.Sc. (Tech.) Doctoral student Khanal, Subash, B.Sc. Research assistant from June 1st Khatun, Afroza Mst, M.Sc. Doctoral student Kiuru, Tero, M.Sc. (Tech.) Doctoral student until November 27th Kivekäs, Outi, D.Sc. (Tech.) Post-doctoral researcher until May 22nd Kolmonen, Veli-Matti, D.Sc. (Tech.) Post-doctoral researcher Kyrö, Mikko, Lic.Sc. (Tech.) Doctoral student Laakso, Lauri, Mr. Laboratory technician Laitinen Tommi, D.Sc. (Tech.) Senior scientist Lindberg, Stina, B.Sc. (Econ.) HR Secretary Lioubtchenko, Dmitri, Ph.D. Academy research fellow Luukkonen, Olli, D.Sc. (Tech.) Post-doctoral researcher until May 31st Maksimovitch, Yelena, Dr. Researcher from June 16th to July 22nd and from November

24th to December 22nd Mallat, Juha, D.Sc. (Tech.) Senior university lecturer Medina Acosto, Gerardo, B.Sc. Erasmus stipendiate until January 19th Meriläinen Mikko, Mr. Research assistant from January 13th to May 31st Mikhnev, Valeri, Dr. Senior scientist from June 13th Morits, Dmitry, M.Sc. Doctoral student Mylläri, Tuula, Ms. Secretary Mäkelä, Sampo, Mr. Research assistant from June 1st Nefedov, Igor, Dr.Sc. Senior scientist Niemi, Teemu, B.Sc. (Tech.). Research assistant Olkkonen, Martta-Kaisa, M.Sc. (Tech.)Doctoral student Parveg, Dristy, M.Sc. Doctoral student Planman, Irma, Ms. HR Secretary Pousi, Patrik, D.Sc. (Tech.) Post-doctoral researcher until June 30th Podlozny, Vladimir, Ph.D. Project manager and senior scientist Popovic, Delia, Ms. Project secretary from August 1st Poutanen, Juho, M.Sc. (Tech.) Doctoral student until January 16th Rasilainen, Kimmo, B.Sc. Research assistant Robertson, Jean-Baptiste, M.Sc.Eng Project coordinator until March 31st Räisänen, Antti, D.Sc. (Tech.) Professor, Head of the department Salo, Sampo Research assistant from June 1st to August 31st Schmuckli, Lorenz, Mr. Laboratory technician Sibakov, Viktor, M.Sc. (Tech.) Laboratory manager Simovski, Constantin, Dr.Sc. Visiting professor Song, Jinsong, B.Sc. Research assistant from January 24th Tamminen, Aleksi, Lic.Sc. (Tech.) Doctoral student

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Takizawa, Kenichi, Dr. Visiting researcher from August 17th Tretyakov, Sergei, Dr.Sc. Professor Vahdati, Ali, M.Sc.(Tech.) Doctoral student from January 26th to July 31st Valkonen, Risto, M.Sc. (Tech.) Doctoral student Vainikainen, Pertti, D.Sc. (Tech.) Professor Vehmas, Joni, B.Sc. (Tech.) Research assistant Virk, Usman, B.Sc. Research assistant from February 1st Zvolensky, Tomas, M.Sc. Doctoral student In the Department of Signal Processing and Acoustics: Aho, Janne, B.Sc. (Tech.) Research assistant from August 3rd Aittomäki, Tuomas, M.Sc. (Tech.) Doctoral student Balakrishnan, Arun, Mr. Stipendiate until August 31st Bica, Marian, B.Sc. Research assistant Bysany D., Satish, B.Sc. Research assistant from March 21st Chaudhari, Sachin, M.Sc. Doctoral student Cierny, Michal, M.Sc. Doctoral student Dhamala, Ujjwal, B.Sc. Research assistant Eriksson, Jan, D.Sc. (Tech.) Senior scientist Haghparast, Azadeh, M.Sc. Doctoral student until July 27th Hynninen, Jussi, M.Sc. (Tech.) Computer administrator Jacob Mathecken, Pramod, M.Sc. Doctoral student Jänis, Pekka, M.Sc. (Tech.) Doctoral student Kashyap, Neelabh, B.Sc. Research assistant from January 12th Koivisto, Tommi, M.Sc. (Tech.) Doctoral student Koivunen, Visa, D.Sc. (Tech.) Academy professor Le, Vieth-Anh, M.Sc. Doctoral student from October 10th Lemetyinen, Mirja, Ms. HR secretary Lundén, Jarmo, D.Sc. (Tech.) Post-doctoral researcher Oborina, Alexandra, M.Sc. Doctoral student Ojaniemi, Jaakko, M.Sc. Doctoral student from December 5th Oksanen, Jan, M.Sc. Doctoral student Ollila, Esa, D.Sc. (Tech.) Academy research fellow Pereira Da Costa, Mario, M.Sc. Doctoral student Pölönen, Keijo, M.Sc. (Tech.) Doctoral student Rajasekharan, Jayaprakash, M.Sc. Doctoral student Razavi, Seyed Alireza, D.Sc. (Tech.) Post-doctoral researcher from September 1st Riihonen, Taneli, M.Sc. (Tech.) Doctoral student Richter, Andreas, D.Sc. Professor Saeed, Umar, B.Sc. Research assistant Salmi, Jussi, D.Sc. (Tech.) Post-doctoral researcher Schober, Karol, M.Sc. Doctoral student Sikander, Ulla, Ms. Project secretary Simonen, Tarmo, M.Sc. (Tech.) Computer administrator Werner, Stefan, D.Sc. (Tech.) Academy research fellow Wichman, Risto, D.Sc. (Tech.) Professor In the Department of Micro and Nanosciences: Aaltonen, Lasse, Lic.Sc. (Tech.) Doctoral student Gronicz Jakub, M.Sc. (Eng.) Doctoral student

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Halonen, Kari, D.Sc. (Tech.) Professor, Head of the department Kalanti, Antti, M.Sc. (Tech.) Doctoral student Kaltiokallio, Mikko, M.Sc. (Tech.) Doctoral student Kärkkäinen, Mikko, Lic.Sc. (Tech.) Doctoral student Laulainen, Erkka, Mr. Research assistant Nieminen, Tero, M.Sc. (Tech.) Doctoral student Pulkkinen, Mika, B.Sc. Research assistant Rapinoja, Tapio M.Sc. (Tech.) Doctoral student Ryynänen, Jussi, D.Sc. (Tech.) Professor Saari, Ville, Lic.Sc. (Tech.) Doctoral student until 30 April Stadius, Kari, Lic.Sc. (Tech.) Senior researcher Söderman, Lea, Ms. Secretary Tikka, Tero, M.Sc. (Tech.) Doctoral student Turunen, Vesa, M.Sc. (Tech.) Doctoral student Varonen, Mikko, Lic.Sc. (Tech.) Post-doctoral researcher Viitala, Olli, M.Sc. (Tech.) Doctoral student Xu, Liangge, M.Sc. (Tech.) Doctoral student Yucetas, Mikail, M.Sc. (Tech.) Doctoral student

7. Visitors to SMARAD in 2011 Visiting Professors: Ass. Prof. Takahiro Aoyagi, Tokyo Institute of Technology, Japan, 1 week Prof. Olga Glukhova, Saratov State University, Russia, 2 weeks Prof. Gregorio Fernando, Universidad Nacional del Sur, Argentina, 2 weeks Prof. Marcello de Campos, Universidad Federal do Rio de Janeiro, Brazil, 1 week Prof. Sergiy Vorobyov, University of Alberta, Kanada, 1 week Prof. Sumit Roy, University of Washington, USA, 1 week Prof. Vincent H. Poor, Princeton University, USA, 1 week

Visiting Researchers: B.Sc. Bruno Hernandez Zamora, Universidad Autonoma de Madrid, Spain, 4 months B.Eng. Soichi Saito, Tokyo Denki University, Japan, 2 months M.Eng. Daisuke Sugizaki, Tokyo Denki University, Japan, 1 month B.Eng. Kenshiro Tsutsuki, Tokyo Denki University, Japan, 1 month M.Sc. Seyedmohammad Hashemi, Iran University of Science and Technology, Iran, 3 months Dr Constantinos Valagiannopoulos, University of Athens, Greece, 12 months M.Sc. Amin Enayati, IMEC, Katholieke Universiteit Leuven, Belgium, 7 months Dr Yelena Maksimovich, Institute of Applied Physics, Minsk, Belorussia, 2 months Dr Kenichi Takizawa, National Institute of Information and Communications Technology, Japan,

5 months M.Sc. Inigo Liberal, Public University of Navarra, 4 months

8. Visits from SMARAD to foreign institutes in 2011 Dr Pekka Alitalo, German Aerospace Center, Wessling, Germany, 2 months Dr Katsuyuki Haneda, University of Southern California, Los Angeles, USA, 2 weeks Dr Katsuyuki Haneda, Tokyo Denki University, Japan, 2 weeks

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Prof. Constantin Simovski, ITMO, St. Petersburg, 2 weeks M.Sc. Tomas Zvolensky, Queen's University, Belfast, UK, 1 month Dr Marko Kosunen, University of California, Berkeley, USA 3 months Dr Mikko Varonen, JPL California Institute of Technology, USA, 11 months Academy prof. Visa Koivunen, Princeton University, USA, 2 months Dr Jarmo Lunden, Princeton University, USA, 8 months M.Sc. (Tech.) Jan Oksanen, Princeton University, USA, 2 months Dr Esa Ollila, Princeton University, USA, 8 months Dr Jussi Salmi, University of Southern California, USA, 1 month

9. Post-graduate degrees Doctor of Science (Technology) degrees in 2011: Jari Holopainen Compact UHF-band antennas for mobile terminals: focus on modelling,

implementation, and user interaction Thesis defence: 29 April 2011 Opponents: Prof. Dirk Manteuffel, Christian-Albrechts-Universität, Kiel, Germany, and Dr Kevin Boyle, EPCOS, UK Ltd, U.K. Preliminary examiners: Prof. Ph.D. Koichi Ito, Chiba University, Japan, and Dr Ping Hui, Nokia Corporation, Canada Supervisor: Prof. Pertti Vainikainen

Ville Saari Continuous-time low-pass filters for integrated wideband radio receivers Thesis defence: 29 April 2011 Opponent: Prof. Mohammed Ismail, The Ohio State University, USA Preliminary examiners: Assoc. Prof. Andrea Baschirotto, University of Milano-Bicocca, Italy, and Dr Kimmo Koli, ST-Ericsson, Finland Supervisor: Prof. Jussi Ryynänen

Juho Poutanen Geometry-based radio channel modelling: Proopagation analysis and concept development Thesis defence: 13 May 2011 Opponents: Dr Jonas Medbo, Ericsson Research, Sweden, and Prof. Martine Lienard, University of Lille, France Preliminary examiners: Prof. Mir Ghoraishi, Tokyo Institute of Technology, Japan, and Dr Tricia Willink, Communication Research Centre, Canada Supervisor: Prof. Pertti Vainikainen

Suiyan Geng Millimeter wave and UWB poropagation for high throughput indoor communications Thesis defence: 2 November 2011 Opponent: Fredrik Tufvesson, Lund University, Sweden Preliminary examiners: Dr Chia-Chin Chong, NTT Dokomo Labs, Palo Alto, USA, and Prof. Hirokazu Sawada, Tohoku University, Sendai, Japan Supervisor: Prof. Pertti Vainikainen

Tero Kiuru Characterization, modelling, and design for applications of waveguide impedance tuners and Schottky diodes at millmeter wave lengths Thesis defence: 12 December 2011 Opponent: Prof. Jan Stake, Chalmers University of Technology, Gothenburg, Sweden

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Preliminary examiners: Dr Thomas Crowe, Virginia Diodes Inc., Charlottesville, USA, and Dr Imran Mehdi, Jet Propulsion Laboratory, Pasadena, USA Supervisor: Prof. Antti Räisänen

Dmitri Chicherin Studies on microelectromechanically tuneable high-impedance surface for millimetre wave beam steering Thesis defence: 2 December 2011 Opponent: Prof. Didier Lippens, Université des Sciences et Technologie de Lille, France Preliminary examiners: Prof. Wolfgang Menzel, University of Ulm, Germany, and Dr Tauno Vähä-Heikkilä, VTT Technical Research Centre of Finland Supervisor: Prof. Antti Räisänen

Licentiate of Science (Technology) degrees in 2011: Krista Dahlberg Mixer test jig for millimeter wave Schottky diodes (Testialusta milimetri-

aaltoalueen Schottky-diodeille) Graduation date: 7 February 2011

Supervisor: Prof. Antti Räisänen External examiner: Dr. Jyrki Louhi, Nokia Siemens Networks

Aleksi Tamminen On developments in submillimeter-wavelength imaging

(Alimillimetriaaltoalueen kuvantamismenetelmien kehittämisestä) Graduation date: 6 October 2011 Supervisor: Prof. Antti Räisänen External examiner: Dr Ville Viikari, VTT Technical Research Centre of Finland

10. Publications 10.1 Articles in scientific journals with peer-review

[1] M. Albooyeh, D. Morits, and C. Simovski, “Electromagnetic characterization of substrated metasurfaces,” Metamaterials, vol. 5, no. 3, pp. 93–111, 2011.

[2] M. Albooyeh and C. Simovski, “Substrate-induced bianisotropy in plasmonic grids,” Journal of Optics A, vol. 13, no. 2, p. 105102, 2011.

[3] P. Alitalo, A. O. Karilainen, T. Niemi, C. R. Simovski, and S.A. Tretyakov, “Design and realisation of an electrically small Huygens source for circular polarization,” IET Microwaves, Antennas & Propagation, vol. 5, no. 7, pp. 783–789, 2011.

[4] P. Alitalo and S. Tretyakov, “Broadband electromagnetic cloaking realized with transmission-line and waveguiding structures (invited paper),” Proceedings of the IEEE, vol. 99, no. 10, pp. 1646–1659, 2011.

[5] D. Baranov, A. Vinogradov, C. Simovski, I. Nefedov, and S. Tretyakov, “On the electrodynamics of an absorptive uniaxial non-positively definite (indefinite) medium,” Journal of Experimental and Theoretical Physics, vol. 141, no. 9, pp. 1–9, 2011.

[6] L. Bergamin, P. Alitalo, and S. Tretyakov, “Nonlinear transformation optics and engineering of the Kerr effect,” Physical Review B, p. 205103, 2011.

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[7] A. Bin Abdullah Al-Hadi, J. Ilvonen, R. Valkonen, J. Holopainen, O. Kivekäs, C. Icheln, and P. Vainikainen, “Coupling element –based dual-antenna structures with hand effects,” Int. J. of Wireless Information Networks, vol. 18, no. 3, pp. 146–157, 2011.

[8] A. Bin Abdullah Al-Hadi, V. Papamichael, and P. Vainikainen, “Multi-antenna mobile terminal diversity performance in proximity to human hands under different propagation environment conditions,” Electronics Letters, vol. 47, pp. 1214–1215, 2011.

[9] D. Chicherin, M. Sterner, D. Lioubtchenko, J. Oberhammer, and A.V. Räisänen, “Analog-type millimeter-wave phase shifters based on MEMS tunable high-impedance surface and dielectric rod waveguide,” Int. J. of Microwave and Wireless Technologies, vol. 3, no. 5, pp. 533–538, 2011.

[10] F. Costa, O. Luukkonen, C. Simovski, A. Monorchio, S. Tretyakov, and P. de Maagt, “TE surface wave resonances on high-impedance surface based antennas: Analysis and modeling,” IEEE Trans. on Antennas and Propagation, vol. 59, no. 10, pp. 3588–3596, 2011.

[11] J. Holopainen, O. Kivekäs, J. Ilvonen, R. Valkonen, C. Icheln, and P. Vainikainen, “Effect of the user's hands on the operation of lower UHF-band mobile terminal antennas: Focus on digital television receiver,” IEEE Trans. on Electromagnetic Compatibility, vol. 53, no. 3, pp. 831–841, 2011.

[12] J. Ilvonen, O. Kivekäs, J. Holopainen, R. Valkonen, K. Rasilainen, and P. Vainikainen, “Mobile terminal antenna performance with the user's hand: Effect of antenna dimensioning and location,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 772–775, 2011.

[13] J. Ilvonen, R. Valkonen, O. Kivekäs, P. Li, and P. Vainikainen, “Antenna shielding method reducing the interaction between user and mobile terminal antenna,” Electronics Letters, vol. 47, no. 16, pp. 896–897, 2011.

[14] A.O. Karilainen, P.M.T. Ikonen, C.R. Simovski, S.A. Tretyakov, A.N. Lagarkov, S.A. Maklakov, K.N. Rozanov, and S.N. Starostenko, “Experimental studies on antenna miniaturisation using magneto-dielectric and dielectric materials,” IET Microwaves, Antennas & Propagation, vol. 5, no. 4, pp. 495–502, 2011.

[15] A.O. Karilainen, P.M.T. Ikonen, C.R. Simovski, and S A. Tretyakov, “Choosing dielectric or magnetic material to optimize the bandwidth of miniaturized resonant antennas,” IEEE Trans. on Antennas and Propagation, vol. 59, no. 11, pp. 3991–3998, 2011.

[16] A.O. Karilainen, J. Vehmas, O. Luukkonen, and S.A. Tretyakov, “High-impedance-surface-based antenna with two orthogonal radiating modes,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 247–250, 2011.

[17] T. Kiuru, J. Mallat, A.V. Räisänen, and T. Närhi, “Schottky diode series resistance and thermal resistance extraction from S-parameter and temperature controlled I–V measurements,” IEEE Trans. on Microwave Theory and Techniques, vol. 59, no. 8, pp. 2108–2116, 2011.

[18] O. Kozina, I. Nefedov, L. Melnikov, and A. Karilainen, “Plasmonic coaxial waveguides with complex shapes of cross-sections,” Materials, vol. 4, pp. 104–116, 2011.

[19] O.N. Kozina, L.A. Melnikov, and I.S. Nefedov, “Strong field localization in subwavelength metal-dielectric optical waveguides,” Optics and Spectroscopy, vol. 111, no. 2, pp. 241–247, 2011.

[20] M. Kyrö, K. Haneda, J. Simola, K. Nakai, K.-i. Takizawa, H. Hagiwara, and P. Vainikainen, “Measurement based path loss and delay spread modeling in hospital environments at 60 GHz,” IEEE Trans. on Wireless Communications, vol. 10, no. 8, pp. 2423–2427, 2011.

[21] I. Liberal, I. S. Nefedov, I. Ederra, R. Gonzalo, and S.A. Tretyakov, “Electromagnetic response and homogenization of grids of ferromagnetic microwires,” J. of Applied Physics, vol. 110, no. 6, p. 064909, 2011.

[22] I. Liberal, I. Nefedov, I. Ederra, R. Gonzalo, and S. Tretyakov, “On the effective permittivity of arrays of ferromagnetic wires,” J. of Applied Physics, vol. 110, p. 104902, 2011.

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[23] O. Luukkonen, S.I. Maslovski, and S.A. Tretyakov, “A stepwise Nicolson-Ross-Weir -based material parameter extraction method,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 1295–1298, 2011.

[24] A. Miroshnichenko, I. Maksymov, A. Davoyan, C. Simovski, P. Belov, and Y. Kivshar, “An arrayed nanoantenna for broadband light emission and detection,” Physica Status Solidi - Rapid Research. Letters, vol. 3, no. 3, pp. 347–349, 2011.

[25] D. Morits and C. Simovski, “Isotropic negative effective permeability in the visible range produced by clusters of plasmonic triangular nanoprisms,” Metamaterials, vol. 5, no. 4, pp. 162–168, 2011.

[26] S. Myllymäki, R. Valkonen, J. Holopainen, A. Huttunen, V.K. Palukuru, M. Berg, H. Jantunen, and E. Salonen, “Capacitive-sensor-induced losses in 900-, 1800-, and 1900-MHz antennas,” IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 330–333, 2011.

[27] I.S. Nefedov and S.A. Tretyakov, “Ultrabroadband electromagnetically indefinite medium formed by aligned carbon nanotubes,” Physical Review B, vol. 84, p. 113410, 2011.

[28] I.S. Nefedov and S.A. Tretyakov, “Effective medium model for two-dimensional periodic arrays of carbon nanotubes,” Photonics and Nanostructures - Fundamentals and Applications, vol. 9, no. 4, pp. 374–380, 2011.

[29] I. Nefedov and C. Simovski, “Giant radiation heat transfer through micron gaps,” Physical Review B, vol. 84, p. 195459, 2011.

[30] P. Padilla, J.P. Pousi, A. Tamminen, J. Mallat, J. Ala-Laurinaho, M. Sierra-Castaner, and A.V. Räisänen, “Experimental determination of DRW antenna phase center at mm-wavelengths using a planar scanner: comparison of different methods,” IEEE Trans. on Antennas and Propagation, vol. 59, no. 8, pp. 2806–2812, 2011.

[31] J. Poutanen, J. Salmi, K. Haneda, V.-M. Kolmonen, and P. Vainikainen, “Angular and shadowing characteristics of dense multipath components in indoor radio channels,” IEEE Trans. on Antennas and Propagation, pp. 245–253, 2011.

[32] C. Schmidt, T. Laitinen, and T. Eibert, “Hybrid fast Fourier transform-plane wave based near-field far-field transformation for “body of revolution” antenna measurement grids,” Radio Science, p. 004640, 2011.

[33] C. Simovski, “On electromagnetic characterization and homogenization of nanostructured metamaterials,” Journal of Optics, vol. 13, no. 1, p. 013001, 2011.

[34] M. Sterner, N. Somjit, U. Shah, S. Dudorov, D. Chicherin, A.V. Räisänen, and J. Oberhammer, “Microwave MEMS devices designed for process robustness and operational reliability,” Int. J. of Microwave and Wireless Technologies, vol. 3, no. 5, pp. 547–563, 2011.

[35] S. Steshenko, F. Capolino, P. Alitalo, and S. Tretyakov, “Effective model and investigation of the near-field enhancement and subwavelength imaging properties of multilayer arrays of plasmonic nanospheres,” Physical Review E, vol. 84, no. 1, p. 016607, 2011.

[36] J. Toivanen, T. Laitinen, V.-M. Kolmonen, and P. Vainikainen, “Reproduction of arbitrary radio-channel environment,” IEEE Trans. on Instrumentation and Measurement, vol. 60, no. 1, pp. 275–281, 2011.

[37] S. Tretyakov, “Bianisotropic materials optimized for strong interactions with electromagnetic fields,” Problems of Physics, Mathematics, and Technics (Special issue on the occasion of the centenary of F.I. Fedorov, invited paper), vol. 2, no. 7, pp. 49–51, 2011.

[38] C. Valagiannopoulos, “The influence of electromagnetic scattering from a permeable sphere on the induced voltage across a rotating eccentric coil,” Journal of Electromagnetic Analysis and Applications, vol. 3, no. 1, p. 6, 2011.

[39] C. Valagiannopoulos, “Electromagnetic scattering of the field of a metamaterial slab antenna by an arbitrarily positioned cluster of metallic cylinders,” Progress in Electromagnetic Research, vol. 114, p. 16, 2011.

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[40] C.A. Valagiannopoulos and N.K. Uzunoglu, “Simplified model for EM inverse scattering by longitudinal subterranean inhomogeneities exploiting the dawn/dusk ionospheric ridge,” IET Microwaves, Antennas & Propagation, vol. 5, no. 11, pp. 1319–1327, 2011.

[41] C.A. Valagiannopoulos, “Electromagnetic propagation into parallel-plate waveguide in the presence of a skew metallic surface,” Taylor & Francis Electromagnetics, vol. 31, no. 8, pp. 593–605, 2011.

[42] C.A. Valagiannopoulos, “High selectivity and controllability of a parallel-plate waveguide component with a filled rectangular ridge,” Progress in Electromagnetic Research, vol. 119, pp. 497–551, 2011.

[43] J. Vehmas, P. Alitalo, and S.A. Tretyakov, “Transmission-line cloak as an antenna,” IEEE Antennas and Wireless Propagation Letters, vol. 10, no. 1, pp. 1594–1597, 2011.

[44] A. Vinogradov, A. Ignatov, A. Merzlikin, S. Tretyakov, and C. Simovski, “Additional effective medium parameters for composite materials (excess surface currents),” Optics Express, vol. 19, no. 7, pp. 6699-6704, 2011.

[45] K. Yamamoto, K. Haneda, H. Murata, and S. Yoshida, “Optimal transmission scheduling for a hybrid of full- and half-duplex relaying,” IEEE Communication Letters, vol. 15, no. 3, pp. 305–307, 2011.

[46] T. Zvolensky, D. Chicherin, A.V. Räisänen, and C. Simovski, “Leaky-wave antenna based on micro-electromechanical systems-loaded microstrip line,” IET Microwaves, Antennas & Propagation, vol. 5, no. 3, pp. 357–363, 2011.

[47] L. Aaltonen, A. Kalanti, M. Pulkkinen, M. Paavola, M. Kämäräinen, and K. Halonen, “A 2.2 mA 4.3 mm2 ASIC for a 1000 degrees/s 2-axis capacitive micro-gyroscope,” IEEE Journal of Solid-State Circuits, vol. 46, no. 7, pp. 1682–1692, July 2011.

[48] V. Turunen, M. Kosunen, S. Kallioinen, A. Pärssinen, and J. Ryynänen, “Spectrum sensor hardware implementation based on cyclostationary feature detector,” Majlesi Journal of Electrical Engineering, vol. 5, no. 1, pp 32–37, March 2011.

[49] F. Gregorio, J. Cousseau, S. Werner, T. Riihonen, and R. Wichman, “Predistorter with IQ imbalance and crosstalk compensation for broadband MIMO OFDM transmitters,” EURASIP Journal on Advances in Signal Processing, 2011, pp. 1–15, July 2011.

[50] F. Gregorio, S. Werner, J. Cousseau, J. Figueroa, and R. Wichman, “Receiver-side nonlinearities mitigation using an extended iterative decision-based technique,” Signal Processing, vol. 91, pp. 2042–2056 March 2011.

[51] M. Husso, J. Hämäläinen, R. Jäntti, J. Nieminen, T. Riihonen, and R. Wichman, “Performance of on-off scheduling strategy in the presence of transmit beamforming,” Physical Communication, vol. 4, no. 1, pp. 3–12, March 2011.

[52] P. Jänis, C. Ribeiro, and V. Koivunen, “Interference aware radio resource management for local area wireless networks,” EURASIP Journal on Wireless Communication and Networking, vol. 2011, article ID 921623, pp. 1–15, 2011.

[53] P. Mathecken, T. Riihonen, S. Werner, and R. Wichman, “Performance analysis of OFDM with Wiener phase noise and frequency selective fading channel,” IEEE Trans. on Communications, vol. 59, pp. 1321–1331, May 2011.

[54] M. Novey, E. Ollila, and T. Adali, “On testing the extent of noncircularity,” IEEE Transactions on Signal Processing, vol. 59, no. 11, pp. 5632–5637, 2011.

[55] E. Ollila, J. Eriksson, and V. Koivunen, “Complex elliptically symmetric random variables - generation, characterization and circularity tests,” IEEE Trans. on Signal Processing, vol. 59, no. 1, pp. 58–69, 2011.

[56] R.-A. Pitaval, H.-L. Määttänen, K. Schober, O. Tirkkonen, and R. Wichman, “Beamforming codebooks for two transmit antenna systems based on optimum Grassmannian packings,” IEEE Trans. on Information Theory, vol. 57, no. 10, pp. 6591–6602, October 2011.

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[57] Man-On Pun, V. Koivunen, and H.V. Poor, “Performance analysis of joint opportunistic scheduling and receiver design for MIMO-SDMA downlink systems,” IEEE Trans. on Communications, vol. 59, no. 1, pp. 268–280, 2011.

[58] J. Remes, T. Starck, J. Nikkinen, E. Ollila, C. Beckmann, O. Tervonen, V. Kiviniemi, and O. Silven, “Effcts of repeatibility measures on results of fMRI sICA: a study on simulated and real resting-state effects,” NeuroImage, vol. 56, no. 2, pp. 554–569, 2011.

[59] T. Riihonen, S. Werner, and R. Wichman, “Hybrid full-duplex/half-duplex relaying with transmit power adaptation,” IEEE Trans. on Wireless Communications, vol. 10, pp. 3074–3085, Sept. 2011.

[60] T. Riihonen, S. Werner, and R. Wichman, “Mitigation of self-interference in full-duplex MIMO relays,” IEEE Transactions on Signal Processing, vol. 59, pp. 5983–5993, Dec. 2011.

[61] T. Riihonen, R. Wichman, and J. Hämäläinen, “Performance analysis of maximum SNR scheduling with an infrastructure relay link,” Wireless Personal Communications, vol. 56, no. 2, pp. 277–299, Jan. 2011.

[62] J. Salmi and A.F. Molisch, “Propagation parameter estimation, modeling and measurements for ultrawideband MIMO radar,” IEEE Trans. on Antennas and Propagation, vol. 59, no. 11, pp. 4257–4267, 2011.

[63] C. Schmidt, J. Figueroa, J. Cousseau, R. Wichman, and S. Werner, “Nonlinearities modeling and post-compensation in continuous-time sigma-delta modulators,” IET Microwaves, Antennas & Propagation, vol. 5, pp. 1796–1804, Dec. 2011.

[64] J.F. Schmidt, J.E. Cousseau, R. Wichman, and S. Werner, “Bit loading using imperfect CSIR for prediction based resource allocation in mobile OFDMA,” IEEE Trans. on Vehicular Technology, vol. 60, pp. 4082–4088, Oct. 2011.

[65] J.F. Schmidt, J.E. Cousseau, R. Wichman, and S. Werner, “Low-complexity channel prediction using approximated recursive DCT,” IEEE Trans. on Circuits and Systems I, vol. 58, pp. 2520–2530, Oct. 2011.

10.2 Articles in conference proceedings and in other edited works

[1] A. Karttunen, J. Ala-Laurinaho, R. Sauleau, and A.V. Räisänen, “Optimal eccentricity of a low permittivity integrated lens for a high-gain beamsteering antenna,” in Proc. of the 5th European Conference on Antennas and Propagation, EuCAP2011, Rome, Italy, 11-15 April, 2011.

[2] A.V. Räisänen, J. Ala-Laurinaho, A. Karttunen, J. Mallat, P. Pousi, and A. Tamminen, “Recent activities on antenna measurements at mm- and submm-wavelengths at Aalto University,” in Proc. of the 5th European Conference on Antennas and Propagation, EuCAP2011, Rome, Italy, 11-15 April, 2011.

[3] R. Sauleau, O. Biro, J. Stiens, Z. Sipus, A.V. Räisänen, L.-P. Schmidt, C.A. Fernandes, J. Mosig, V. Fusco, S. Maci, A. Neto, A.I. Nosich, A.V. Boriskin, “Newfocus research networking program,” in Proc. of the 5th European Conference on Antennas and Propagation, EuCAP2011, Rome, Italy, 11-15 April, 2011.

[4] J.P. Pousi, D.V. Lioubtchenko, and A.V. Räisänen, “High permittivity rectangular dielectric rod waveguide for 110-325 GHz,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[5] Z. Du, D. Chicherin, and A.V. Räisänen, “Beam steering with MEMS-based HIS on a lossy sillicon substrate at 80 GHz,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[6] K. Dahlberg, T. Kiuru, J. Mallat, A.V. Räisänen, and T. Närhi, “Mixer test jig for millimeter wave Schottky diodes,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on

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Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[7] A. Enayati, G.A.E. Vandenbosch, W. De Raedt, and A.V. Räisänen, “Multilayer PCB technology for antenna-in-package solution at millimetrewave frequencies,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[8] A.A. Generalov, D.V. Lioubtchenko, J. Mallat, V. Ovchinnikov, and A.V. Räisänen, “Novel RF power sensor on Si rod waveguide,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[9] R. Sauleau, O. Biro, J. Stiens, Z. Sipus, A.V. Räisänen, L.-P. Schmidt, C.A. Fernandes, J. Mosig, V. Fusco, S. Maci, A. Neto, A.I. Nosich, and A.V. Boriskin, “Newfocus research networking program,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23rd – May 25th, 2011, Espoo, Finland.

[10] A. Tamminen, J. Ala-Laurinaho, J. Häkli, P. Koivisto, J. Säily, A. Luukanen, and A.V. Räisänen, “Reflectarray design for 120-GHz MMID application: simulation results,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[11] T. Kiuru, A. Gonzalez Garcia, and T. Närhi, “MMIC subharmonic mixer for 94 GHz,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[12] A. Karttunen, J. Ala-Laurinaho, R. Sauleau, A.V. Räisänen, “Reduction of internal reflections in low permittivity integrated lens antennas,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[13] A. Enayati, S. Brebels, G.A.E. Vandenbosch, W. Deraedt, and A.V. Räisänen, “Antenna-in-package solution for 3D integration of millimeterwave systems using a thin-film MCM technology,” in IEEE MTT-S Microw. Symp. Dig., Baltimore, Maryland, USA, June 5-10, 2011, 4 p.

[14] K. Dahlberg, T. Kiuru, J. Mallat, A.V. Räisänen, and T. Närhi “Generic jig for testing mixing performance of millimeter wave Schottky diodes,” in Proc. of the 41st European Microwave Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 922-925.

[15] T. Zvolensky, D. Chicherin, A. Räisänen, C. Simovski, H. Hakojärvi, M. Sterner, and J. Oberhammer, “Leaky-wave antenna at 77 GHz,” in Proc. of the 41st European Microwave Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 1039-1042.

[16] Z. Du, D. Chicherin, and A.V. Räisänen, “Millimeter wave beam steering with a MEMS-based high impedance surface,” in Proc. of the 41st European Microwave Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 1043-1046.

[17] A. Enayati, W. Deraedt, G.A.E. Vandenbosch, and A.V. Räisänen, “Antenna-in-package solution for millimeter-wave applications implemented in a microwave-compatible multilayer PCB technology,” in Proc. of the 41st European Microwave Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 1061-1064.

[18] T. Kiuru, K. Dahlberg, J. Mallat, A.V. Räisänen, and T. Närhi, “Comparison of low-frequency and microwave frequency capacitance determination techniques for mm-wave

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Schottky diodes,” in Proc. of the 6th European Microwave Integrated Circuits Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 53-56.

[19] T. Kiuru, J. Mallat, A.V. Räisänen, and T. Närhi, “Compact broadband MMIC Schottky frequency tripler for 75 - 140 GHz,” in Proc. of the 6th European Microwave Integrated Circuits Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 108-111.

[20] A. Enayati, W. Deraedt, G.A.E. Vandenbosch, and A.V. Räisänen, “Antenna-in-package solution for millimeter-wave applications implemented in a microwave-compatible multilayer PCB technology,” in Proc. of the 6th European Microwave Integrated Circuits Conference, European Microwave Week 2011, Manchester, Oct. 10 – 14, 2011, pp. 600- 603.

[21] A. Luukanen, J. Ala-Laurinaho, D. Gomes Martins, J. Häkli, P. Koivisto, P. Pursula, P. Rantakari, J. Säily, A. Tamminen, R. Tuovinen, and M. Sipilä, “Rapid beamsteering reflectarrays for mm-wave and submm-wave imaging radars,” in Passive Millimeter-Wave Imaging Technology XIV (D. A. Wikner and A. R. Luukanen, eds.), Orlando, Florida, USA, SPIE, April 25-29, 2011.

[22] P. Alitalo, C. A. Valagiannopoulos, and S. A. Tretyakov, “Simple cloak for antenna blockage reduction,” in IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting (AP-S/URSI 2011), Spokane, USA, 3-8 July, 2011.

[23] P. Alitalo, C. A. Valagiannopoulos, and S. A. Tretyakov, “Low-reflection millimeter-wave composite lens,” in Proc. of the Millimetre Wave Days: The 6th ESA Workshop on Millimetre-Wave Technology and Applications, and The 4th Global Symposium on Millimeter Waves GSMM2011, May 23-25, 2011, Espoo, Finland.

[24] P. Alitalo, J. Vehmas, and S. A. Tretyakov, “Reduction of antenna blockage with a transmission-line cloak,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 2399-2402.

[25] A. O. Karilainen, P. Alitalo, and S. A. Tretyakov, “Chiral antenna element as a low backscattering sensor,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 1983-1986.

[26] C. A. Valagiannopoulos, P. Alitalo, and S. A. Tretyakov, “Analytical model for coupling of waves between a homogeneous medium and a volumetric transmission-line network,” in IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting (APS/ URSI 2011), Spokane, USA, July 3-8, 2011.

[27] J. Vehmas, P. Alitalo, and S. A. Tretyakov, “Cloaking performance of a transmission-line cloak in free space and in the near field of a horn antenna,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, Oct. 10-13, 2011.

[28] L. Bergamin and S. Tretyakov, “Non-linear transformation optics,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, Oct. 10-13, 2011, pp. 275-277.

[29] A. Bin Abdullah Al-Hadi, M. Costa, V. Koivunen, and P. Vainikainen, “Ambiguity analysis of isolation-based multi-antenna structures on mobile terminal,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 576-580.

[30] A. Bin Abdullah Al-Hadi, K. Haneda, and P. Vainikainen, “Site-specific evaluation of a MIMO channel capacity for multi-antenna mobile terminals in proximity to a human hand,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 562-566.

[31] J. Ilvonen, O. Kivekäs, A. Bin Abdullah Al-Hadi, R. Valkonen, J. Holopainen, and P. Vainikainen, “Isolation improvement method for mobile terminal antennas at lower UHF band,”

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in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 1307-1311.

[32] D. Titz, M. Kyrö, F. Ferrero, S. Ranvier, C. Luxey, P. Brachat, G. Jacquemod, and P. Vainikainen, “Measurement setup and associated calibration methodology for 3d radiation pattern of probe-fed millimeterwave antennas,” in IEEE Loughborough Antennas and Propagation Conference (LAPC), Loughborough, UK, Nov. 14-15, 2011, 5 p.

[33] F. Costa, O. Luukkonen, C. Simovski, A. Monorchio, S. Tretyakov, and P. de Maagt, “Accuracy of homogenization models for finite high-impedance surfaces located in the proximity of a horizontal dipole,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, Oct. 10-13, 2011, pp. 143-145.

[34] M. Dashti, A. Khatun, T. Laitinen, K. Haneda, J.-i. Takada, and P. Vainikainen, “Impact of antenna pattern on UWB time-based ranging,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 2812-2816.

[35] P. Vainikainen, E. Vitucci, V. Degli-Esposti, T. Laitinen, V.-M. Kolmonen, and J. Poutanen, “Use of realistic propagation channel information in MIMO antenna system evaluation,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 2712-2715.

[36] I. Fedosov, I. Nefedov, B. Khlebtsov, and V. Tuchin, “Measurements of laser induced temperature fields in gold colloids using light microscopy,” in Proceedings of III International Symposium Topical Problems of Biophotonics, IAP RAS, N.Novgorod. 2011 – 363, St.Petersburg – N.Novgorod, July 16-22, 2011, p. 140.

[37] V. Grimalsky, I. Nefedov, and Y. Rapoport, “2D electron dynamics in single layer graphene metamaterial,” American Institute of Physics (AIP), Bad Honnef, October 26-28, 2011, pp. 138-140.

[38] C. Gustafson, F. Tufvesson, S. Wyne, K. Haneda, and A. F. Molisch, “Directional analysis of measured 60 GHz indoor radio channels using SAGE,” in 2011 IEEE Vehicular Technology Conference (VTC2011- Spring), Budapest, Hungary, May 15-18, 2011, 3 p.

[39] K. Haneda, J. Poutanen, V.-M. Kolmonen, L. Liu, F. Tufvesson, P. Vainikainen, and C. Oestges, “Validation of the COST2100 channel model in indoor environments,” in NEWCOM++ / COST 2100 Joint Workshop on Wireless Communications, Paris, France, March 1-2, 2011.

[40] K. Haneda, A. Richter, and P. Vainikainen, “Experimental identification of an image source distribution on an indoor map,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, p. 17.

[41] K. Haneda, F. Tufvesson, S. Wyne, M. Arlelid, and A. F. Molisch, “Feasibility study of mm-wave impulse radio using measured radio channels,” in 2011 IEEE Vehicular Technology Conference (VTC2011- Spring), Budapest, Hungary, May 15-18, 2011, 3 p.

[42] J. Poutanen, L. Liu, K. Haneda, and T.-F. V. P. Oestges, Claude, “Parameterization of the COST 2100 MIMO channel model in indoor scenarios,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, p. 06-2.

[43] S. Pivnenko, J. M. Nielsen, O. Breinbjerg, T. Laitinen, and T. B. Hansen, “Comparison of two high-order probe correction techniques for spherical near-field antenna measurements,” in 33rd ESA Antenna Workshop, Noordwijk, The Netherlands, October 18-21, 2011.

[44] R. Valkonen, J. Ilvonen, K. Rasilainen, J. Holopainen, C. Icheln, and P. Vainikainen, “Avoiding the interaction between hand and capacitive coupling element based mobile terminal antenna,” in Proc. of the 5th European Conference on Antennas and Propagation, Rome, Italy, Apr. 11-15, 2011, pp. 2781-2785.

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[45] A. Vinogradov, A. Ignatov, A. Merzlikin, S. Tretyakov, and C. Simovski, “Additional effective medium parameters for composite materials (excess surface currents),” in Days on Diffraction 2011, St. Petersburg, Russia, 30 May - 3 June, 2011, pp. 181-182.

[46] A. O. Karilainen and S. A. Tretyakov, “Zero-backscattering self-dual object from two chiral particles,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, Oct. 10-13, 2011, pp. 405-407.

[47] A. Khatun, T. Laitinen, and P. Vainikainen, “Cubical surface scanning for near-field antenna measurements using spherical wave expansion,” in Antenna Measurement Techniques Association, Denver, CO, USA, Oct. 16-21, 2011, p. 11-0107.

[48] M. Kyrö, D. Titz, V.-M. Kolmonen, S. Ranvier, P. Pons, C. Luxey, and P. Vainikainen, “5 x 1 linear antenna array for 60 GHz beam steering applications,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 1327-1331.

[49] T. Laitinen, S. Pivnenko, J. Nielsen, and O. Breinbjerg, “On the sensitivity of probe-corrected spherical near-field antenna measurements with highorder probes using double phi-step theta-scanning scheme against various measurement uncertainties,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011, pp. 1933-1937.

[50] T. Laitinen and S. Pivnenko, “Separation of radiation from two sources from their known radiated sum field,” in XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science, Istanbul, Turkey, Aug. 13-20, 2011.

[51] T. Laitinen and S. Pivnenko, “On the truncation of the azimuthal mode spectrum of high-order probes in probe-corrected spherical near-field antenna measurements,” in Antenna Measurement Techniques Association, Denver, CO, USA, October 16-21, 2011, p. 11-0105.

[52] T. Laitinen, J. Toivanen, and P. Vainikainen, “Toward accurate antenna measurements using multi-probe systems,” in XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science, Istanbul, Turkey, Aug. 13-20, 2011.

[53] M. Olkkonen, T. Laitinen, and P. Vainikainen, “Non-destructive RF moisture measurement of a bio material web,” in 9th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA 2011), Kansas City, USA, May 31 - June 3, 2011, pp. 30-36.

[54] S. Pivnenko, J. M. Nielsen, O. Breinbjerg, T. Laitinen, and T. B. Hansen, “Comparison of two high-order probe correction techniques for spherical near-field antenna measurements,” in 33rd ESA Antenna Workshop, Noordwijk, The Netherlands, October 18-21, 2011.

[55] C. Schmidt, T. Laitinen, and T. Eibert, “Hybrid fast Fourier transform-plane wave based near-field far-field transformation for “body of revolution” antenna measurement grids: the cylindrical case,” in IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting (AP-S/URSI 2011), Spokane, USA, 3-8 July, 2011, pp. 1628-1631.

[56] V. Semkin and T. Laitinen, “Ultra wideband antenna for the near-field multi-probe system of scanning,” in The 5th International Conference on Electromagnetic Near-field Characterization and Imaging (ICONIC), Rouen, France, November 30 - December 2, 2011.

[57] O. Luukkonen, S. Maslovski, and S. Tretyakov, “An approach to finding the correct branch from the forest of possible solutions for extracted effective material parameters (invited),” in XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science, Istanbul, Turkey, Aug. 13-20, 2011, p. 5.

[58] C. Simovski and O. Luukkonen, “Edge waves and their use for the broadband field concentration,” in Days on Diffraction, St. Petersburg, Russia, 30 May - 3 June, 2011, pp. 168-169.

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[59] C. Simovski and O. Luukkonen, “Metamaterials for efficient and broadband transition from wave beams to evanescent packages,” in Metamaterials 2011: The Fift International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, October 10-13, 2011, pp. 874-876.

[60] S. Tretyakov, S. Maslovski, and O. Luukkonen, “On retrieval of electromagnetic parameters of complex optical materials from reflection and transmission measurements (invited),” in 10th Mediterranean Workshop and Topical Meeting “Novel Optical Materials and Applications”, Cetraro, Italy, 5-11 June, 2011.

[61] S. Maslovski, Y. Rapoport, and S. Tretyakov, “Perfect lensing with phaseconjugating surfaces: approaching practical realization (invited),” in Days on Diffraction 2011, St. Petersburg, Russia, 30 May - 3 June, 2011, pp. 143-144.

[62] S. Maslovski, Y. Rapoport, and S. Tretyakov, “Perfect lens based on ideal phase conjugating surfaces (invited keynote talk),” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, October 10-13, 2011, pp. 627- 629.

[63] D. Morits and C. Simovski, “Negative effective permeability at optical frequencies produced by clusters of plasmonic particles,” in Days of Diffraction, St. Petersburg, Russia, 30 May - 3 June, 2011, pp. 145-146.

[64] D. Morits and C. Simovski, “Thin-film solar cell enhanced by broadband plasmonic nanoantennas,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, October 10-13, 2011, pp. 519-521.

[65] D. Morits and C. Simovski, “On electromagnetic characterization of nanoclustered metamaterials,” in The 3rd International Topical Meeting on Nanophotonics and Metamaterials (Nanometa 2011), Seefeld, Austria, Jan. 3-6, 2011, p. 9.

[66] C. Simovski and D. Morits, “On plasmonic light-trapping for tandem thinfilm solar cells,” in International Conference on Electrodynamics of Complex Materials for Advanced Technologies, PLASMETA'11, Samarkand, Uzbekistan, Sept. 21-27, 2011, pp. 52-53.

[67] I. Nefedov and Y. Rapoport, “Stop light and electrical control of the carbon nanotube-graphene structure,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, Oct. 10-13, 2011, pp. 766- 768.

[68] I. Nefedov and C. Simovski, “Giant enhancement of the thermal radiation heat transfer through the gap between two bodies, carried by hyperbolic media,” in Next Generation Solar Energy From Fundamentals to Applications, Erlangen, Germany, December 12-14, 2011.

[69] I. Nefedov and C. Simovski, “Radiative heat transfer assisted by carbon nanotubes,” in Metamaterials 2011: The Fifth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, Barcelona, Spain, October 10-13, 2011, pp. 1012-1014.

[70] I. Nefedov, S. Tretyakov, and C. Simovski, “Arrays of carbon nanotubes as ideal backward wave terahertz metamaterials,” in Europhysics Conf. Abstracts, Vol. 35 A, Seefeld, Tirol, Austria, EPS, 3 - 6 January, 2011, p. mon2o.2.pdf.

[71] I. Nefedov and S. Tretyakov, “Effective medium model for a periodic array of metallic carbon nanotubes and eigenwaves propagating in a finitethickness carbon nanotube slab,” in Physics, Chemistry and Applications of Nanostructures (V. E. Borisenko, S. V. Gaponenko, V. S. Gurin, and C. H. Kam, eds.), Singapore, World Scientific Publishing, 2011, pp. 267-269.

[72] I. Nefedov and S. Tretyakov, “Backward waves in arrays of aligned carbon nanotubes,” in Optics Days Book of abstracts (A. Popov, A. Bykov, J. Lauri, and M. Kauppinen, eds.), Tampere, University of Oulu, Finland, May 12-13, 2011, p. 42.

[73] I. Nefedov, “Effects of electromagnetic interaction in periodic arrays of single-wall metallic carbon nanotubes,” in 14th Int. Workshop on New Approaches to High-Tech: Nano-Design,

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Espoo, Finland, Aalto University, School of Science, Dept. of Applied Physics, August 22-26, 2011, p. 29.

[74] I. Nefedov, “Eigenwaves propagating in finite-thickness slabs of aligned metallic carbon nanostructures,” in 5-th Finnish-Russian Photonics and Laser Symposium Technical Digest, Saint-Petersburg, Russia, October 18- 20, 2011, pp. 33-34.

[75] I. Nefedov, “Electromagnetic wave properties of carbon nanotube films in the mid infrared range,” in Days on Diffraction 2011, St. Petersburg, Russia, 30 May - 3 June, 2011, pp. 147-148.

[76] S. Tretyakov, I. Nefedov, and C. Simovski, “Towards optimized metamaterial performance: Choosing the optimal geometry and the best raw material” in ICMAT 2011, Singapore, 26 June - 1 July 2011, p. 18.

[77] C. Valagiannopoulos and C. Simovski, “Conversion of evanescent waves into propagating modes by passing through a metamaterial prism: an iterative approximation method,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011.

[78] C. Valagiannopoulos, “On adjusting the characteristics of a low-index slab antenna with a finite set of metallic pins,” in 5th European Conference on Antennas and Propagation (EuCAP 2011), Rome, Italy, Apr. 11-15, 2011.

[79] N. Kashyap, S. Werner, and Y.-H. Huang,“Event-triggered multi-area state estimation in power systems,” The Fourth International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), San Juan, Puerto Rico, Dec. 2011.

[80] P. Mathecken, T. Riihonen, S.Werner, and R.Wichman,“Accurate characterization and compensation of phase noise in OFDM receiver,” 45th Annual Asilomar Conference on Signals, Systems, and Computers (ACSSC), Pacific Grove, California, Nov. 2011.

[81] T. Riihonen, S. Werner, and R. Wichman, “Transmit power optimization for multiantenna decode-and-forward relays with loopback self-interference from full-duplex operation,” 45th Annual Asilomar Conference on Signals, Systems, and Computers (ACSSC), Pacific Grove, California, Nov. 2011.

[82] F. Vitiello, T. Riihonen, J. Hämäläinen, and S. Redana, “On buffering at the relay node in LTE-Advanced,” Proc. IEEE 74th Vehicular Technology Conference (VTC-Fall), San Francisco, California, Sept. 2011.

[83] M. Cierny, C. Ribeiro, R. Wichman, and O. Tirkkonen, “Inter-cell interference management in OFDMA TDD downlink using sounding/silencing protocol,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Toronto, Canada, Sept. 2011.

[84] B. Raaf, W. Zirwas, K.-J. Friederichs, E. Tiirola, M. Laitila, P. Marsch, and R. Wichman, “Vision for beyond 4G broadband radio systems,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Toronto, Canada, Sept. 2011, invited paper.

[85] K. Schober, R. Wichman, and T. Koivisto, “MIMO adaptive codebook for closely spaced antenna arrays,” European Signal Processing Conference (EUSIPCO), Barcelona, Spain, Aug. 2011.

[86] G. González, F. Gregorio, J. Cousseau, S. Werner, and R. Wichman, “Cyclostationary autocorrelation based CFO estimators,” European Signal Processing Conference (EUSIPCO), Barcelona, Spain, Aug. 2011.

[87] F. Gregorio, J. Cousseau, S. Werner, T. Riihonen, and R. Wichman, “Compensation of IQ imbalance and transmitter nonlinearities in broadband MIMO-OFDM,” IEEE International Symposium on Circuits and Systems ISCAS, Rio de Janeiro, Brazil, May 2011.

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[88] K. Schober, H.-L. Määttänen, O. Tirkkonen, and R. Wichman, “Normalized covariance matrix quantization for MIMO broadcast systems,” European Wireless, Vienna, Austria, April 2011.

[89] M. Cierny, C. Ribeiro, R. Wichman, and O. Tirkkonen, “SINR prediction versus reverse reporting for soft reuse and interference management,” European Wireless, Vienna, Austria, April 2011.

[90] M. Cierny, P. Jänis, R. Wichman, and C. Ribeiro, “Exclusion regions via handshaking protocol for inter-cell interference management,” Conference on Information Sciences and Systems (CISS), Baltimore Maryland, USA, March 2011.

[91] T. Riihonen, A. Balakrishnan, K. Haneda, S. Wyne, S. Werner, and R. Wichman, “Optimal eigenbeamforming for suppressing self-interference in full-duplex MIMO relays,” Conference on Information Sciences and Systems (CISS), Baltimore, Maryland, USA, March 2011.

[92] J. F. Schmidt, J. E. Cousseau, R. Wichman, and S. Werner, “Prediction based resource allocation in OFDMA,” Conference on Information Sciences and Systems (CISS), Baltimore, Maryland, USA, March 2011.

[93] M. Kaltiokallio, V. Saari, S. Kallioinen, A. Parssinen, and J. Ryynanen, “Wideband 2 to 6GHz RF front-end with blocker filtering,” in Proceedings of 37th European Solid-State Circuits Conference (ESSCIRC2011), Helsinki, Finland, 12-16 Sept. 2011, pp. 539-542.

[94] S. Kallioinen, M. Vääräkangas, P. Hui, J. Ollikainen, I. Teikari, A. Pärssinen, V. Turunen, M. Kosunen, and J. Ryynänen , ”Multi-mode, multi-band spectrum sensor for cognitive radios embedded to a mobile phone,” in Proc. Int. Conf. Cognitive Radio Oriented Wireless Networks and Communications, Osaka, Japan, June 2011, pp. 236-240.

[95] M. Vääräkangas, S. Kallioinen, A. Pärssinen, V. Turunen, and J. Ryynänen, “Trade-offs in primary detection using a mobile phone as a sensing device,” in Proc. Int. Conf. Cognitive Radio Oriented Wireless Networks and Communications, Osaka, Japan, Jun. 2011, pp. 241-245.

[96] S. Kiminki, V. Saari, A. Pärssinen, V. Hirvisalo, A. Immonen, J. Ryynänen, and T. Zetterman, “Design and performance trade-offs in parallelized RF SDR architecture,” in Proc. Int. Conf. Cognitive Radio Oriented Wireless Networks and Communications, Osaka, Japan, June 2011, pp. 156-160.

[97] M. Kaltiokallio and J. Ryynänen, “A 1 to 5GHz adjustable active polyphase filter for LO quadrature generation,” IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Baltimore, USA, June 2011, 4 p.

[98] K. Stadius, M. Kaltiokallio, J. Ollikainen, T. Pärnänen, V. Saari, and J. Ryynänen, “A 0.7-2.6 GHz high-linearity RF front-end for cognitive radio spectrum sensing,” 2011 IEEE International Symposium on Circuits and Systems, Brazil, 15-18 May 2011, pp. 2181-2184.

[99] T. Rapinoja, L. Xu, K. Stadius, and J. Ryynänen, “Implementation of all-digital wideband RF frequency synthesizers in 65-nm CMOS technology,” IEEE International Symposium on Circuits and Systems, Brazil, 15-18 May 2011, pp. 1948–1951.

[100] M. Varonen, M. Kärkkäinen, D. Sandström, and K. Halonen, “A 100-GHz balanced FET frequency doubler in 65-nm CMOS,” 6th European Microwave Integrated Circuits Conference, Manchester, UK, October 2011, pp. 105-107.

[101] M. Yücetas, L. Aaltonen, M. Pulkkinen, J. Salomaa, A. Kalanti, and K. Halonen, ”A charge balancing accelerometer interface with electrostatic damping,” European Solid-State Circuits Conference, Helsinki, Finland, September 2011, pp. 291-294.

[102] R. Jayaprakash, J. Eriksson, and V. Koivunen, “Cooperative game theory and auctioning for spectrum allocation in cognitive radios,” 22nd IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Toronto (PIMRC), Canada, Sep. 2011.

[103] T. Aittomäki and V. Koivunen, “Resource allocation for target detection in distributed MIMO radars,” in Asilomar Conference on Signals, Systems and Computers (ACSSC), Nov. 2011.

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[104] T. Aittomäki and V. Koivunen, “Widely distributed MIMO radar beamforming for detecting targets with slow RCS Fluctuations,” in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), May 2011, pp. 2792-2795.

[105] K. Pölönen and V. Koivunen, “Reduced complexity space-time coding in single-frequency networks,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Cancún, Mexico, Mar. 2011, pp. 1523-1528.

[106] J. Lundén, V. Koivunen, S. R. Kulkarni, and H. V. Poor, “Exploiting spatial diversity in multiagent reinforcement learning based spectrum sensing,” in Proc. 4th IEEE Int. Workshop Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2011), San Juan, Puerto Rico, Dec. 13-16, 2011, pp. 325-328.

[107] J. Lundén, V. Koivunen, S. R. Kulkarni, and H. V. Poor, “Reinforcement learning based distributed multiagent sensing policy for cognitive radio networks,” in Proc. 5th IEEE Int. Symp. New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2011), Aachen, Germany, May 3-6, 2011, pp. 642-646.

[108] S. Chaudhari, J. Lundén, and V. Koivunen, “BEP walls for cooperative spectrum sensing,” in Proc. 36th IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP 2011), Prague, Czech Republic, May 22-27, 2011, pp. 2984-2987.

[109] S. Chaudhari, J. Lundén, and V. Koivunen, “Effects of quantization on BEP walls for soft decision based cooperative sensing,” in Proc. 12th IEEE Int. Workshop Signal Processing Advances in Wireless Communications (SPAWC 2011), San Francisco, CA, USA, Jun. 26-29, 2011, pp. 106-110.

[110] S. Chaudhari, J. Lundén, and V. Koivunen, “Performance limitations for cooperative spectrum sensing with reporting channel errors,” in Proc. 22nd IEEE Int. Symp. Personal, Indoor, and Mobile Radio Communications (PIMRC 2011), Toronto, Canada, Sep. 11-14, 2011, pp. 337-342.

[111] P. Jänis, C. Ribeiro, and V. Koivunen, “On the performance of flexible UL-DL switching point in TDD wireless networks,” in The 2nd IEEE GLOBECOM Workshop on Femtocell Networks, Houston USA, 2011, 6 p.

[112] J. Salmi, S. Sangodoyin, and A. F. Molisch, “High resolution parameter estimation for ultra-wideband MIMO radar,” in The 44nd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 7-10, 2010. Published in 2011.

[113] E. Ollila, V. Koivunen, and H. V. Poor, “A robust estimator and detector of circularity of complex signals,” in IEEE Int. Conf. Acoustics, Speech and Signal Processing (ICASSP'11), Prague, Czech republic, May 22-27, 2011, pp. 3620-3623.

[114] A. Oborina, V. Koivunen, and T. Henttonen, “Effective SINR distribution in MIMO OFDM systems,” in Proc. 44th Asilomar Conference on Signals, System and Computers, Nov. 2010, pp. 511-515. Published 2011.

[115] E. Ollila, V. Koivunen, and H. V. Poor, “Complex-valued signal processing - essential models, tools and statistics,” in 2011 Information Theory and Applications Workshop, San Diego, CA, USA, Feb 6-11, 2011.

[116] E. Ollila and H.-J. Kim, “On testing hypothesis of mixing vectors in the ICA model using FastICA,” in IEEE Int. Symp. Biomedical Imaging (ISBI'11), Chicago, USA, Mar. 30 - Apr. 2, 2011, pp. 325 - 328.

[117] K. Nordhausen, P. Ilmonen, A. Mandal, H. Oja, and E. Ollila, “Deflation-based FastICA reloaded,” in 19th European Signal Processing Conference (EUSIPCO'11), Barcelona, Spain, Aug. 29 – Sep. 2, 2011, pp. 1854 - 1858.

[118] K. Nordhausen, E. Ollila, and H. Oja, “On the performance indices of ICA and blind source separation,'” in 12th IEEE Int. Workshop on Signal Processing Advances for Wireless Communications (SPAWC'11), San Fransisco, CA, June 26-29, 2011, pp. 461 - 465.

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[119] M. Costa, A. Richter, and V. Koivunen, “Model order selection in sensor mrray mesponse modeling,” in 45th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, California, USA, Nov. 2011.

10.3 Published monographs

No monographs published in 2011 10.4 Other scientific publications

[1] D. Chicherin, “Studies on microelectromechanically tuneable high-impedance surface for millimetre wave beam steering,” No. 127/2011 in Aalto University publication series DOCTORAL DISSERTATIONS, Aalto University, Espoo, Finland, 2011.

[2] S. Geng, “Millimeter wave and UWB propagation for high throughput indoor communications,” No. 97/2011 in Aalto University publication series DOCTORAL DISSERTATIONS, Aalto University, Espoo, Finland, 2011.

[3] J. Holopainen, “Compact UHF-band antennas for mobile terminals: Focus on modelling, implementation, and user interaction.,” No. 28/2011 in Aalto University publication series DOCTORAL DISSERTATIONS, Aalto University, Helsinki, 2011.

[4] T. Kiuru, “Characterization, modeling, and design for applications of waveguide impedance tuners and schottky diodes at millimeter wavelengths,” No. 133/2011 in Aalto University Publication Series DOCTORAL DISSERTATIONS, Aalto University, Espoo, Finland, 2011.

[5] J. Poutanen, “Geometry-based radio channel modeling: Propagation analysis and concept development,” No. 37/2011 in Aalto University publication series DOCTORAL DISSERTATIONS, Aalto University, Helsinki, 2011.

[6] V. Saari, “Continuous-time low-pass filters for integrated wideband radio receivers,” No. 23/2011 in Aalto University publication series DOCTORAL DISSERTATIONS, Aalto University, Helsinki, 2011.

[7] A. Räisänen (ed.): SMARAD, Centre of Excellence in Smart Radios and Wireless Research, Activity Report 2008-2010. Aalto University, Department of Radio Science and Engineering, Science+Technology Report no. 31, December 2011, 88 p.

10.5 Text books and other books related to scientific research

[1] A. Räisänen and A. Lehto: Radiotekniikan perusteet (Fundamentals of Radio Engineering, in Finnish). Otatieto, Helsinki, Finland, 13th edition, 2011, 286 p.

10.6 Chapters in books

[1] N. Tsitsas and C. Valagiannopoulos, “Mathematical modeling of spherical microstrip antennas and applications,” in InTech Microstrip Antennas Book, Open source e-book, 2011, 22 p.

[2] K. Nordhausen, H. Oja, and E. Ollila, “Multivariate models and the first four moments,” in Nonparametric Statistics and Mixture Models, Eds. D. Hunter, D. Richards, and J. L. Rosenberger, pp. 267-287, Singapore: World Scientific, 2011.

[3] H. Kokkinen, J. Henriksson, and R. Wichman, “TV White Spaces in Europe,” in R.A. Saeed, S.J. Shellhammer (ed.). "TV White Space Spectrum Technologies: Regulations, Standards and Applications" CRC Press, October 2011.

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11. Other scientific activities of SMARAD members University Boards: Kari Halonen Member, Steering group of Aalto School of Electrical Engineering Member, Doctoral Programme Committee of Aalto School of Electrical Engineering Member, Board of Directors of MilliLab Department Head, Department of Micro and Nanosciences Visa Koivunen Vice-leader, SMARAD CoE Jussi Ryynänen Head of Electronics and Electrical Engineering (EST) study programme Vice Chair, EST degree programme committee Member, Aalto Bachelor study renewal committee Antti Räisänen Chairman, Doctoral Programme Committee of Aalto School of Electrical Engineering Member, Steering group of Doctoral Education of Aalto University Member, Steering group of Aalto School of Electrical Engineering Department head, Department of Radio Science and Engineering Leader, SMARAD CoE Chairman, Board of Directors of MilliLab Participation in Organization of Scientific Conferences and Membership in Expert Boards Kari Halonen TPC Member, European Solid-State Circuits Conference TPC Member, IEEE International Solid-State Circuits Conference TPC Chair and member of Organizing Comittee of ESSCIRC 2011 Conference in Helsinki Member, Management Group of NORCHIP Conference Member, Management Group of PRIME workshop Associate Editor, IEEE Journal of Solid-State Circuits Member, Editorial board of Springer International J. of Analog Integrated Circuits and Signal

Processing Visa Koivunen Fellow, IEEE Associate Editor, Signal Processing Associate Editor, IEEE Transactions on Signal Processing Associate Editor, EURASIP Journal of Wireless Communications and Networking IEEE Signal Processing Society, Industrial Liason board Member and industry liason, IEEE Signal Processing for Communications Technical

Committee (SPCOM-TC) Member, IEEE Sensor Array and Multichannel Signal Processing Technical Committee (SAM-

TC)

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KTH advisory board, ICT area COST IC902 Cognitive Radios, Finland representative Jussi Ryynänen TPC Member, European Solid-State Circuits Conference ESSCIRC 2011 TPC Member, European Conference on Circuit Theory and Design, ECCTD 2011 Workshop chair ESSCIRC 2011 Antti Räisänen Fellow, IEEE Edmond S. Gillespie Fellow, AMTA Member of the Board of Directors, Member of the General Assembly, European Microwave

Association (EuMA) Chairman of the EuMA Awards Committee Member, Steering Committee of the European School of Antennas Member, Steering Committee, ESF NEWFOCUS Member of the TPC, 5th European Conference on Antennas and Propagation, EuCAP2011

(Rome, Italy, 11-15 April, 2011) Co-Chair of the Steering Committee, 4th Global Symposium on Millimeter Waves, GSMM2011

(Espoo, Finland, May 23–25, 2011) Member of the TPC, 14th European Microwave Week, EuMW2011 (Manchester, UK, 9-14

October, 2011) Member of the TPC, 6th ESA Workshop Workshop on Millimetre-Wave Technology and

Applications (Espoo, Finland, May 23-25, 2011) Member of the TPC, 33rd Annual Antenna Measurement Techniques Association (AMTA)

Symposium (Denver, USA, 16-21 October, 2011) Sergei Tretyakov Fellow, IEEE Fellow, Electromagnetics Academy President, the Virtual Institute for Artificial Electromagnetic Materials and Metamaterials Member, Steering Committee of the European Doctoral Programme on Metamaterials Deputy member, URSI Finnish National Committee General chair, 5th International Congress on Advanced Electromagnetic Materials in

Microwaves and Optics (Barcelona, Spain, October 2011) Member of the TPC, Optics & Optoelectronics Congress on 18-22 April 2011 in Prague Member of the TPC, SPIE Optics + Photonics, Metamaterials: Fundamentals and Applications

IV, 21-25 August 2011, San Diego, California, USA Member of the TPC, 2011 International Conference on Problems of Interaction of Radiation

with Matter, October 26-28, 2011, Gomel, Belarus Member of the TPC, Loughborough Conference on Antennas and Propagation, 14-15 Nov.

2011, UK Member, Expert Advisory Group for Nanosciences, Nanotechnologies, Materials and New

Production Technologies (European Commission, 7th Framework Programme) Risto Wichman Offical Member, URSI Finnish National Committee, Radiocommunication Systems and Signal

Processing

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Local liaison office, EURASIP TPC Member IEEE Globecom Steering Group Member, COST IC0803 RF/Microwave Communication Subsystems for

Emerging Wireless Technologies Review Activities Kari Halonen Reviews for IEEE Journal of Solid-State Circuits, IEEE Transactions on Circuits and Systems I

and II, IEEE Transactions on Microwave Theory and Design, Int. Journal of Analog Integrated Circuits and Signal Processing

Reviews for NORCHIP Conference, European Solid State Circuits Conference, IEEE International Solid-State Circuits Conference, IEEE Symposium on Circuits and Systems, European Conference on Circuit Theory and Design, PRIME workshop

Visa Koivunen Reviews for journals: IEEE Transactions on Signal Processing, IEEE Signal Processing

Magazine, IEEE Journal of Selected Areas in Communications, IEEE Transactions on Antennas and Propagation, IEEE Jornal of Selected Topics in Signal Processing

Reviews for conferences IEEE ICASSP, IEEE SPAWC, IEEE SAM, IEEE PIMRC, IEE ICC Jussi Ryynänen Reviews for IEEE Transactions on Circuits and Systems-Part I, IEEE Journal of Solid-State

Circuits, Integration, the VLSI Journal, IEEE European Solid State Circuits Conference, and IEEE International Symposium on Circuits and Systems ISCAS 2011

Review for research proposal, NWO, The Netherlands Organisation for Scientific Research Antti Räisänen Editorial Board Member, Experimental Astronomy Evaluation for ERC Evaluations for IEEE Fellow Committee, USA Evaluations for ESF Research Networking Programme Evaluation for Agence Nationale de la Recherche, France Evaluation for a faculty position in Information and Communication Technology: Chalmers

University of Technology, Sweden Reviews for Applied Physics Letters, IEEE Proceedings, IEEE Transactions on Microwave

Theory and Techniques, IEEE Transactions on Antennas and Propagation, IEEE Transactions on Instrumentation and Measurement, IEEE Microwave andWireless Components Letters, IEEE Antennas and Propagation Letters, IEEE Transactions on Electron Devices, IEEE Transactions on Electromagnetic Compatibility, IEEE Transactions on Components, Packaging and Manufacturing Technology, IEEE Transactions on Instrumentation and Measurement, IEEE/ASME Journal of Microelectromechanical Systems, IET Electronics Letters, IET Microwaves, Antennas & Propagation, Progress in Electromagnetics Research, Journal of Electromagnetic Waves and Applications, Int. Journal of Microwave, and Wireless Technologies,

Conference paper reviews: EuCAP2011, EuMW2011, ESA Workshop on Millimetre Wave Technology 2011, GSMM 2011, 33rd AMTA Symposium

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Constantin Simovski Reviews for Nature Materials, Nature Communications, IEEE Trans. on Antennas and

Propagation, IEEE Trans. on Microwave Theory and Technique, IEEE Antennas and Wireless Propagation Letters, Physical Review B, Physical Review E, Physical Review Letters, Journal of Optics (Pure and Applied), Optics Letters, Journal of Applied Physics, Applied Physics Letters, Metamaterials, Optics Express, Optics Communications, Journal of Lightwave Technology. Optics and Spectroscopy

Sergei Tretyakov Editorial Board Member, Progress in Electromagnetics Research, Problems of Physics,

Mathematics, and Technics Reviews for Science, Nature Photonics, Nature Materials, Nature Communications, IEEE

Trans. on Antennas and Propagation, Physical Review, Physical Review Letters, Journal of the Optical Society of America A and B, Optics Letters, Journal of Applied Physics, Metamaterials, Optics Express, Optics Communications, IET Proceedings, New Journal of Physics, etc.

Pertti Vainikainen Reviews for IEEE Transactions on Instrumentation and Measurement, IEEE Transactions on

Antennas and Propagation,, IET Electronics Letters, IEEE Antennas and Wireless Propagation Letters

Risto Wichman Reviews for IEEE Trans. on Vehicular Technology, IEEE Trans. on Signal Processing, IEEE

Communication Letters, Springer Wireless Networks, EURASIP Journal on Wireless Communications and Networking

Evaluation of project proposals for Czech Science Foundation and Austrian Science Foundation