A noise cancellation technique in active RF-CMOS mixers
暂无分享,去创建一个
Based on the physical understanding of noise mechanisms in active mixers, a noise cancellation technique to reduce the flicker-noise contribution of the switches in a Gilbert-type mixer is presented. A prototype double-balanced mixer in 0.13 /spl mu/m CMOS is fabricated as a proof of concept. The circuit achieves a flicker-noise corner almost an order-of-magnitude lower than that of a standard implementation without compromising the linearity, gain, or power consumption.
[1] A.A. Abidi,et al. Noise in RF-CMOS mixers: a simple physical model , 2000, IEEE Journal of Solid-State Circuits.
[2] Danilo Manstretta,et al. Second-order intermodulation mechanisms in CMOS downconverters , 2003, IEEE J. Solid State Circuits.
[3] Robert G. Meyer,et al. Noise in current-commutating CMOS mixers , 1999, IEEE J. Solid State Circuits.
[4] Willy Sansen,et al. Distortion in bipolar transistor variable-gain amplifiers , 1973 .