A 24 GHz Direct Conversion Receiver for FMCW Ranging Radar Based on Low Flicker Noise Mixer

In this paper, a 24 GHz direct conversion receiver (DCR) for frequency-modulated continuous-wave (FMCW) ranging radar based on low flicker noise mixer in 90 nm silicon-on-insulator (SOI) CMOS technology is presented. A low-noise and low-power low-noise-amplifier (LNA) adopting simultaneous input matching (SNIM) method designed. Neutralized boost inductor are introduced to improve performance. The measurement results of standalone LNA show that the peak gain 17.2 dB at 23.8 −3 bandwidth around 2.2 from 22.8 25 GHz. achieves an average 3 NF within band. current-bleeding used lower factors influencing have been discussed. Proper element values local oscillator (LO) power chosen make low-noise. Measurement illustrate exhibits 20.3 gain, 7 SSB figure (NF) −22 dBm IP1dB. Flicker measured respectively knee-point observed 60 kHz. consumes only 16 mW with chip area 0.65 mm2 including pads. demonstrate proposed can be promising candidate FMCW radar.