Title :
75–85 GHz flip-chip phased array RFIC with simultaneous 8-transmit and 8-receive paths for automotive radar applications
Author :
Bon-Hyun Ku ; Inac, Ozgur ; Chang, Mingchao ; Rebeiz, Gabriel M.
Author_Institution :
Univ. of California at San Diego, La Jolla, CA, USA
Abstract :
This paper presents the first simultaneous 8-transmit and 8-receive paths 75-85 GHz phased array RFIC for FMCW automotive radars. The receive path has two separate I/Q mixers each connected to 4-element phased arrays for RF and digital beamforming. The chip also contains a build-in-self-test system (BIST) for the transmit and receive paths. Measurements on a flip-chip prototype show a gain >24 dB at 77 GHz, -25 dB coupling between adjacent channels in the transmit and receive paths (<;-45 dB between non-adjacent channels), and <;-50 dB coupling between the transmit and receive portions of the chip.
Keywords :
CW radar; FM radar; array signal processing; built-in self test; flip-chip devices; millimetre wave integrated circuits; millimetre wave mixers; phased array radar; road vehicle radar; 4-element phased arrays; BIST; FMCW automotive radars; I/Q mixers; RF beamforming; build-in-self-test system; digital beamforming; flip-chip prototype; frequency 75 GHz to 85 GHz; phased array RFIC; simultaneous 8-transmit and 8-receive paths; Arrays; Automotive engineering; Couplings; Gain; Mixers; Radar; Receivers; 77 GHz circuits; Automotive radar; Phased array; SiGe BiCMOS; receiver; transmitter;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2013 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6059-3
DOI :
10.1109/RFIC.2013.6569607
