Generalized Linear Periodic Time-Varying Analysis for Noise Reduction in an Active Mixer

A simple linear periodic time-varying circuit model is proposed to rigorously analyze the noise behavior in an active mixer. This analysis can be shown to be a generalization of existing LPTV mixer models, which assume that the mixer is a memoryless device and, as a result, is valid for low frequency only. Based on the proposed LPTV circuit model, explicit formulas for noise figure that accounts for the effect of the thermal noise folding and the flicker noise leakage are derived. Our analysis shows that the mixer operating at OFF overlap mode yields a better noise performance. The analysis is validated against simulations and measurements.

[1]  Won Namgoong,et al.  Generalized noise analysis of active mixers by simple linear periodic time-varying circuit model , 2005, Proceedings of the IEEE 2005 Custom Integrated Circuits Conference, 2005..

[2]  Asad A. Abidi,et al.  Noise in passive FET mixers: a simple physical model , 2004, Proceedings of the IEEE 2004 Custom Integrated Circuits Conference (IEEE Cat. No.04CH37571).

[3]  Henry D'Angelo,et al.  Linear time-varying systems : analysis and synthesis , 1970 .

[4]  A. Izenman.  Introduction to Random Processes, With Applications to Signals and Systems , 1987 .

[5]  A.A. Abidi,et al.  Noise in RF-CMOS mixers: a simple physical model , 2000, IEEE Journal of Solid-State Circuits.

[6]  William A. Gardner,et al.  Introduction to random processes with applications to signals and systems: Reviewer: D. W. Clarke Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PK, England , 1988, Autom..

[7]  R. Castello,et al.  A 0.18 /spl mu/m CMOS direct-conversion receiver front-end for UMTS , 2002, 2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315).

[8]  Asad A. Abidi,et al.  A 1 GHz CMOS RF front-end IC for a direct-conversion wireless receiver , 1996, IEEE J. Solid State Circuits.

[9]  Robert G. Meyer,et al.  An engineering model for short-channel MOS devices , 1988 .

[10]  B. Nauta,et al.  A CMOS switched transconductor mixer , 2004, IEEE Journal of Solid-State Circuits.

[11]  Alper Demir,et al.  Analysis and Simulation of Noise in Nonlinear Electronic Circuits and Systems , 1997 .

[12]  A. Abidi.  Direct-conversion radio transceivers for digital communications , 1995, Proceedings ISSCC '95 - International Solid-State Circuits Conference.

[13]  Robert G. Meyer,et al.  A systematic approach to the analysis of noise in mixers , 1993 .

[14]  Ali Hajimiri,et al.  Complete noise analysis for CMOS switching mixers via stochastic differential equations , 2000, Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044).

[15]  Michiel Steyaert,et al.  A 1.5 GHz highly linear CMOS downconversion mixer , 1995, IEEE J. Solid State Circuits.

[16]  Behzad Razavi,et al.  Design considerations for direct-conversion receivers , 1997 .

[17]  J. Chiu,et al.  A noise cancellation technique in active RF-CMOS mixers , 2005, IEEE Journal of Solid-State Circuits.

[18]  Jaijeet Roychowdhury,et al.  Reduced-order modeling of time-varying systems , 1999 .

[19]  Robert G. Meyer,et al.  Noise in current-commutating CMOS mixers , 1999, IEEE J. Solid State Circuits.