A 45nm 76-81GHz CMOS Radar Receiver for Automotive Applications

Abstract

This paper describes the design and performance of a 45nm CMOS (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> =160GHz) 76-81GHz radar receiver used in Advanced Driver-Assistance Systems which utilizes Frequency-Modulated Continuous Wave (FMCW) synthesis. The receiver achieves 18dB noise figure and -7dBm 1dB compression point consuming 225mW power. The design includes programmable gain for linearity-noise trade-off, 15MHz wide bandwidth baseband filters, 1.8G samples per second 3 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rd</sup> order Sigma-Delta ADC with 70dB Spurious free dynamic range. In-built safety architecture enables meeting stringent automotive safety requirements.