A Wide IF Baseband-Noise-Cancelling CMOS Analog Receiver with Current-Mirror TIA

by using a baseband noise cancellation, a CMOS mixer-first analog receiver with power reduction is proposed. Based on a current-mirror TIA structure, positive capacitive feedback is applied to manipulate poles/zeros location, enabling a wide baseband bandwidth and out-of-band second-order filtering profile. The additional radio frequency N-path filtering and baseband 40dB/dec roll-off supress out-of-band interferences. The presented frontend is designed in 65 nm CMOS. Simulations demonstrate a minimal noise figure of 2.0 dB, and a voltage gain of 32.5 dB across the 220 MHz intermediate frequency range. The in-band (IB) and out-of-band (OOB) IIP3 manifests −12.5/15 dBm. The receiver circuit draws 27.4 mW at a typical 1 GHz LO stimulus.