A passive-mixer-first receiver with baseband-controlled RF impedance matching, ≪ 6dB NF, and ≫ 27dBm wideband IIP3

Abstract

A passive-mixer-first receiver in 65 nm CMOS is presented where baseband feedback resistors provide a tunable impedance match to the RF port using the transparency property of passive mixers. Tuned to an S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> <-12 dB, the circuit achieves >27 dBm wideband IIP3, <6 dB NF and >70 dB of gain with 60 mW power consumption.