Abstract
This paper presents a 76–81 GHz receiver path for automotive radar applications in 28-nm FD-SOI CMOS technology. It introduces a new accurate phase control using MOS varactors. The proposed solution implemented in the front-end low noise amplifier (LNA) allows a phase control of maximum 22° with a 0.2° resolution for minimum degradation of the LNA and the receiver performances. The receiver contains a two-stage LNA with 5.5 dB noise figure (NF), a passive mixer, a local oscillator (LO) driver and a baseband (BB) amplifier. The receiver exhibits input compression points (ICP <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1dB</inf> ) of −25.2 dBm and −12.6 dBm with and without BB amplifier, respectively. The active area of the receiver path is only 0.057 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> for a total power consumption of 41.7 mW.
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