Distortion in Current Commutating Passive CMOS Downconversion Mixers

CMOS passive mixer linearity is analyzed using a Volterra-series analysis and closed-form expressions for IIP 2 , two-tone IIP 3 , and cross-modulation IIP 3 are presented, exhibiting dependence upon the mixer source and load impedances. Design guidelines are suggested for improving the mixer linear...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2009-11, Vol.57 (11), p.2671-2681
Main Authors: Khatri, H., Gudem, P.S., Larson, L.E.
Format: Article
Language:English
Subjects:
1f noise
Analog integrated circuits (ICs)
Applied sciences
Circuit properties
CMOS
CMOS passive mixer
current commutating mixer
Design. Technologies. Operation analysis. Testing
Distortion
Distortion measurement
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Exact solutions
FETs
Frequency
Guidelines
Impedance
Integrated circuits
Intermodulation distortion
Linearity
Mathematical analysis
Microwaves
Mixers
Nonlinear distortion
passive mixer nonlinearity
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal convertors
Time series analysis
Voltage
Volterra series analysis
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Description
Summary:CMOS passive mixer linearity is analyzed using a Volterra-series analysis and closed-form expressions for IIP 2 , two-tone IIP 3 , and cross-modulation IIP 3 are presented, exhibiting dependence upon the mixer source and load impedances. Design guidelines are suggested for improving the mixer linearity performance. Accurate expressions are presented for the input impedance of an ideal passive mixer with an arbitrary load impedance. The calculations are in close agreement with the measured results and the simulated response.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2009.2031930