design and analysis of ultra-wide band mixer
TRANSCRIPT
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
1/21
DESIGN AND ANALYSIS OF
ULTRA-WIDE BAND MIXER
GUIDED BY PRESENTED BY
Prof. RAJESH KHATRI OM SARAF
(E&I Dept.) M.Tech (E&I.)
Microelectronics &VLSI design
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
2/21
Content Introduction
Literature survey
Specification
Basics of GILBERT MIXER
Design guideline
Basic design
Modified design
Further modification
Mixer with test bench
S11 parameter
S22 parameter
Conversion gain
1dB compression point
IIP3-point
My Results
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
3/21
Introduction
Inreceiverside first antenna comes in picturethanthat signal for
modification forwardto LNA (lownoise amplifier)than a filterstates in
betweenthem andthan forcatchingthose signals carrierof same frequency
generated by local ossilatorandthan formixing a unitcomes inuse and
thatis MIXER whichgenerate IF signals.
VERY BASIC DESIGN IS AS
Introduction
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
4/21
Literature survey An Improved Highly-Linear Low-Power Down-Conversion Micromixer for 77 GHz Automotive
Radar in SiGe Technology 2006 IEEE.
AN ULTRAWIDEBAND (UWB) MIXER WITH 0.18 UM RF CMOS TECHNOLOGY Department of
Electrical and Computer Engineering University of Manitoba Winnipeg, Manitoba, Canada.
A Novel 0.6V CMOS Folded Gilbert-Cell Mixer for UWB Applications 2008 IEEE.
A Low Power Folded Mixer for UWB System Applications in 0.18-m CMOS Technology.
A Low-Noise UWB CMOS Mixer Using Switched Biasing Technique RFIT2007-IEEE International
Workshop.
A 1.2-V, 5.8-mW, Ultra-Wideband Folded Mixer in 0.13-m CMOS 2007 IEEE Radio Frequency
Integrated Circuits Symposium.
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
5/21
Specification
Ultra wide band applicationranges in between-- 3.1GHz -10.6GHz.
Lowvoltageofoperationwith -- 1.8-v.
Technologywhich usedis-- 0.18umcmos.
Conversiongain-- 4dB ormorein 1.8-v.
IIP3 (Thirdorderintercept point)morethan -10dBm
1dB compression pointmorethan -7dBm
Output Noise - >-120dB
S11 parameter-- -5dB ormorenegative S22 parameter-- -5dB ormorenegative
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
6/21
BASICS OF GILBERT MIXER
WIDELY USED IN COMMUNICATION SYSTEMS.
GILBERT MIXER PERFORMS A VOLTAGE TO CURRENT CONVERSION OF RF
SIGNAL MODIFIED BY LO SIGNALS.
ADVANTAGE OVER OTHER MIXERS IS THAT IT MIX LESS NOISE IN MIXED
SIGNAL.
ALL PORTS OF THE MIXER ARE INHERENTLY ISOLATED FROM EACH OTHER.
LESS SUSCEPTABLE TO SUPPLY VOLTAGE NOISE DUE TO DIFFRENTIAL
TOPOGRAPHY.
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
7/21
DESIGN GUIDLINE
The RF signal is applied to the transistors
M2 & M3 which perform a voltage to current
conversion.
These M2 & M3 are working in saturation so
it is providing gain for mixer.
MOSFets M4 to M7 Perform a multiplication
function.
The two load resistors form a current to
voltage trans-formation giving differentialoutput IF signals.
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
8/21
Basic Design
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
9/21
Modifieddesign
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
10/21
Final Modification
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
11/21
Mixerwith Test Bench
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
12/21
S11 - Parameter
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
13/21
S22- Parameter
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
14/21
Conversion Gain
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
15/21
1dB- Compression point
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
16/21
IIP3- Using QPSS and QPAC
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
17/21
Output Noise
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
18/21
Comparisonof Results
Required Circuit Results
Gain >4dB 4.25dB
Output Noise most negative -152.5 dBm
1dB compression >-10dB - 7.2dBm
3rd Order intercept >-3dB -10.336dBm
S11 parameter >5dB -5.3dB
S22 parameter >5dB -5.6dB
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
19/21
Just Few Days Ago In BasicCircuitGain
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
20/21
Conclusion
Now these results still waiting for more improvement
over Power Consumption of the circuit further that Layout
and Post Layout will perform.
-
8/3/2019 Design and Analysis of Ultra-wide Band Mixer
21/21
THANK YOU