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A 94-GHz 4TX–4RX Phased-Array FMCW Radar Transceiver With Antenna-in-Package | IEEE Journals & Magazine | IEEE Xplore

A 94-GHz 4TX–4RX Phased-Array FMCW Radar Transceiver With Antenna-in-Package


Abstract:

A 94-GHz phased-array transceiver IC for frequency modulated continuous wave (FMCW) radar with four transmitters, four receivers, and integrated LO generation has been de...Show More

Abstract:

A 94-GHz phased-array transceiver IC for frequency modulated continuous wave (FMCW) radar with four transmitters, four receivers, and integrated LO generation has been designed and fabricated in a 130-nm SiGe BiCMOS technology, and integrated into an antenna-in-package module. The transceiver, targeting gesture recognition applications for mobile devices, has been designed using phased-array techniques to reduce the total DC power while still maintaining the required link budget for FMCW operation. The complete array achieves state-of-the-art for W-band per-element power consumption of 106 mW per TX element and 91 mW per RX element, and measurements indicate a per-element output power of 6.4 dBm and single-sideband noise figure of 12.5 dB at 94 GHz. The array is able to achieve a beam steering range of ±20° while maintaining at least 3 dB main lobe to side lobe levels. The complete chip-antenna module has been tested to characterize basic FMCW radar functionality. Initial radar experiments suggest a sub-5-cm range resolution is possible with 3.68 GHz RF sweep bandwidth, which is in line with theoretical predictions.
Published in: IEEE Journal of Solid-State Circuits ( Volume: 52, Issue: 5, May 2017)
Page(s): 1245 - 1259
Date of Publication: 30 March 2017

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