Mohan Krishnan Gopal mohan.k.gopal@gmail.com

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[1] Highlights Experienced Engineer with a PhD (Major: Electrical Eng - Semiconductor,

Minor: Optical science & Microwaves) Employability: Permanent resident in USA Knowledge and experience of Silicon-Germanium strained QW devices,

Analog/Mixed-signal/RF IC, Optical Science, Microwaves Proven ability to develop and implement new devices/systems and to manage

complex projects Very good knowledge of Electrical Power, High voltage and Machinery

[2] Unique Achievements Strained SiGe Mosfet: Published text book Optical_Slip_Ring: Novel 8 channel slip-ring for high EMI environments EMI test facility: First full-fledged facility in India, including the design of a

shielded chamber Satellite design: First satellite fully designed in India and launched onboard an

indigenous launch vehicle Current Sheet Applicator: Unique microwave radiator for phased array

oncology

Keywords: Silicon-Germanium, Si/SiGe QW, Opto-electronic IC, Microwave IC, a-Si/a-SiC MQW High efficiency Solar Cells, Electro-magnetic Interference (EMI/EMC), Spacecraft technology

[3] ObjectiveDesign Simulation, Testing and management of: (1) Silicon/Silicon-Germanium hetero-junction and multi-quantum well devices for Microwave, Optical and Laser applications (2) Electro-Optic & Opto-Electronic devices and Integrated Circuits (3) VDMOS & IGBT (4) MQW high efficiency Solar Cells and technology (5) Analog, Mixed and Microwave IC (6) Spacecraft Technology (7) Technical Management of Projects involving above devices/systems

[4] Accomplishments Supervised the design and fabrication of an 8-channel Optical_Slip_Ring to

interface between a control computer and a rotating oven used for casting large astronomical telescope mirrors

Designed, prototyped and tested an 8 channel dynamically offset corrected Data Acquisition System for an Infrared imaging array for Magellan space telescope

Managed and supervised, as Project Engineer, the design, integration, testing and launching of a satellite. From this assignment I have very good knowledge of: diverse electronic systems, EMI/EMC, theory and practical aspects of Solar Cells and Solar Panels, space-craft related thermal and mechanical engineering aspects.

Managed the design and fabrication of a mid-size EMI shielded chamber and established a full-fledged EMI test facility in the range of 10 MHz to 10 GHz. This was the first one of its kind in India and was widely used for EMI testing of Satellite sub-systems and Satellites

Designed, fabricated and tested a 0.5 degree accurate, low cost, solar cell based Attitude Measurement System for a gamma ray balloon experiment

Managed, designed, fabricated, tested and implemented Current Sheet Applicator (CSA) for clinical use. It was a novel, dedicated, first of its kind, small size RF radiator for Phased Array Hyperthermic Oncology

Managed the design and testing of an automated Permeability vs Temperature measurement system, along with a 0.1 degree accurate temperature controller, for a Ferro-seed characterization system. Implantable Ferromagnetic-seeds are used for clinical Hyperthermic Oncology.

[5] Education University of Arizona, Tucson, Arizona December 2008PhD in Electrical Engineering (Dissertation: Si/SiGe QW mosfet)(Major: Semiconductor Devices and IC, Minor: Optical Science and Microwaves) University of New Hampshire, Durham, New Hampshire September 1986MS in Electrical Engineering (Electronics and Biomedical) Indian Institute of Technology, Tamilnadu, IndiaM.Tech (Masters) in Electrical Engineering (Semiconductors, Electronics, Microwave) University of Kerala, Kerala, IndiaB.Tech (Bachelors) in Electrical Engineering (Power, Machinery, High voltage)

[6] Graduate Level CoursesAnalog Integrated Circuit (IC), Solid State Devices, Physical Electronics (Quantum-Semiconductor), IC-Packaging, Microwave Theory & Design - passive, Optical Fibers, Optical Interferometry, Optoelectronics, Fiber Optics Laboratory, Plasma Engineering,

[7] Graduate level term projects Plasma etching of Silicon Integrated Circuits – project paper Instrumentation system IC with three very diverse sensor inputs, multiplexer and

Op-Amp – group design project Instrumentation Amplifier with Op-Amp – group design project Hybrid analog circuit layout – project paper 8 channel Fiber-optic Multiplexer – project paper Microwave Filter IC design, processing and testing – term project

[8] Experience Three years experience in the design and simulation of Analog/Mixed-signal ICs.

Performance metrics extraction of a 15 bit 100 MHz Pipeline ADC using Matlab and Simulink. Preliminary design of this ADC. Design evaluation of a 14 bit 100 KSPS Delta-Sigma DAC

Three years experience in the design of dynamically offset corrected amplifier arrays, Data Interface units and Electro-Optic sensors/systems

In depth knowledge and experience of Si/SiGe hetero-junction devices Good knowledge and design experience of CMOS device and IC. Knowledge and experience of Digital, Analog and Microwave Signal Processing PECVD growth and measurements of amorphous Si/SiC Multi-Quantum Well Strong background in modern Optical Science and experience with optical fiber

measurements [RF Radiator]: Designed, fabricated, tested and implemented a novel small size

RF radiator suitable for phased array RF Hyperthermic Oncology. It was the smallest and first dedicated radiator for phased array hyperthermia. The design was duplicated at two other clinics and is being used in clinics in Europe. The radiator (CSA) is referred in many international hyperthermia research papers, http://tinyurl.com/k3fazqc (IEEE-MTT)

[Project Engineer for Satellite]: Managed the design, integration, testing and launch operations. Satellite was successfully launched from India onboard an

indigenous launch vehicle [EMI test facility]: Five years experience with EMI/EMC including in depth

literature research. Designed and fabricated a medium size EMI shielded chamber. Established a full fledged EMI/EMC test facility in the range of 10 MHz to 10 GHz based on MIL-Std specifications. It was the first of its kind in India. This experience and knowledge were used in the satellite design and for solving EMI problems of satellites

Experience with Spice, Silvaco, Agilent ADS, ISE-TCAD, Matlab, Simulink, TCL, C, Basic, Assembler, EXCEL, UNIX, MS windows XP, interfacing of PC for instrumentation and control, Experience with PDKs from TAPO, IBM, American Semiconductor

8 years employment with RF radiator design, circuit design and opto-electronic design. 8 years full time employment with Indian Space Research Org

[9] Employment and professional projectsLiterature research, SiGe QW, Opto-Electric IC , VDMOS, IGBT, 06/2014 to Present Internet Consulting, Tucson, Arizona 04/2011 to 04/2014 Semiconductor Devices – research and tutoring, Web page design, Advertisement banner design, Internet business, remote instrumentation design using a microcontroller and a wireless datalink, EMI/EMC consultation.University of Arizona, Tucson, Arizona 02/2010 to 02/2011Survey technical paper on VDMOS and IGBT, for IEEE SpectrumPaper on Silicon-Germanium based on my PhD dissertation, for IEEE SpectrumVDM Verlag, Germany 04/2009 to 12/2009Text Book: Analytical design and numerical verification of strained Si/SiGe QW mosfetUniversity of Arizona, Tucson, Arizona 05/2008 to 12/2008Completion and submission of doctoral dissertationRidgetop Group Inc., Tucson, Arizona 02/2006 to 05/2008Senior Design Engineer, Engineering Intern and Contract projectDesign and Simulation of Analog/Mixed IC, Analog-Digital-Converter, DAC

[10] Publications and Presentations Published text book on strained Silicon-Germanium Mosfet, Fourteen Publications and Presentations in the fields of Microwave, RF radiators for Phased Array Hyperthermic Oncology, Bio-medical engineering, Satellite Integration

[11] Professional Skills Si/SiGe hetero-junction/MQW Devices, Opto-electronics, Electro-optics, a-Si/a-SiC MQW, Analog/Mixed-signal/RF IC, CMOS, VDMOS, IGBT, High Efficiency MQW Solar Cell Technology, Discrete Analog/Mixed-signal IC Design, EMI/EMC, Electrical Power, High voltage, Electrical Machinery, Satellite System Integration, Technical Project Management

[12] Professional Life story After completion of Masters Degree in Electrical Engineering in India I joined Indian Space Research Org. (ISRO) as satellite system integration engineer. I participated actively in the integration and testing of two satellites and managed the set up of a full fledged EMI/EMC test facility. Later I performed successfully as a Project Engineer of a satellite. This assignment involved satellite design, system integration, testing and launch co-ordination.

After the successful launch of the satellite I came to the United States and joined Electrical Engineering department of University of New Hampshire for a second Masters degree. There I completed MS degree in Electrical Engineering with a Bio-medical engineering project. This project was awarded continuation funding. But my desire to change major into semiconductor devices and Integrated circuit prompted me to leave

the university.

Afterwards I joined the Electrical Engineering department of the University of Arizona for my PhD. Realizing that the university has an elite Optical Science department I opted Optical Science as my minor. Opto-electronic Integrated Circuit (OP- IC) was just evolving with companies like AT&T (Lucent now) and was at its infancy. Pursuit of a novel dissertation in Opto-Electronic IC was very much enticing to me. With a lot of effort I managed to arrange a forced meeting between two Electrical Engineering professors and two Optical Science professors. The former did not show interest in the latter and the latter did not show interest in the former, at that time. To my great disappointment my plans to pursue an innovative Opto-electronic IC research did not materialize.

Another research field of interest to me was System_on_a_Chip (SOC). I started working with a professor in IC Packaging. Soon he left the university and I was again left with broken struggles.

Then I started working with an Electrical Engineering professor interested in Opto-electric optical modulator using exciton shift. We chose amorphous Silicon/Silicon-carbide multi quantum wells (MQW) for the modulator. With a borrowed PECVD (plasma enhanced chemical vapor deposition) facility and non-ideal measurement facilities it took over two years to grow device quality MQW (multi-quantum wells). Soon the project was abandoned since we could not find exciton levels in these MQW. But from this research I studied extensively high efficiency Tandem solar cells using amorphous MQWs of silicon/silicon-carbide

I was always looking for a novel project with full of challenges. Eventually I took up a project with the Design and Simulation of strained Silicon-Germanium QW mosfet. This led to the Hetero-junction high mobility p-mosfet using Silicon/Silicon-Germanium junctions and strained SiGe QW.

Obviously my PhD dissertation took over six years due to all the above factors and the desire for novelty and challenge. I completed my PhD degree in Electrical Engineering with a major in Electrical Engineering and a joint minor in Optical Science and Microwaves. The PhD dissertation was the ‘Design and Simulation of Strained Silicon/Silicon-Germanium Hetero Junction MOSFET’.