Title :
A multimode-beamforming 77-GHz FMCW radar system
Author :
Pfeffer, Clemens ; Feger, Reinhard ; Wagner, Christoph ; Stelzer, Andreas
Author_Institution :
Christian Doppler Lab. for Integrated Radar Sensors, Johannes Kepler Univ., Linz, Austria
Abstract :
In this work a multimode-beamforming 77-GHz frequency-modulated continuous-wave radar system is presented. Four transceiver chips with integrated inphase/quadrature modulators in the transmit path are used in order to simultaneously realize a short-range frequency-division multiple-access (FDMA) multiple-input multiple-output (MIMO) and a long-range transmit phased-array (PA) radar system with the same antennas. It combines the high angular resolution of FDMA MIMO radars and the high-gain and steerable beam of PA transmit antennas. Several measurements were carried out to show the potential benefits of using this concept for a linear antenna array with four antennas and methods of digital beamforming in the receive path.
Keywords :
CW radar; FM radar; MIMO radar; array signal processing; frequency division multiple access; linear antenna arrays; millimetre wave antenna arrays; millimetre wave radar; modulators; phased array radar; radar antennas; radar resolution; radio transceivers; transmitting antennas; FDMA MIMO radars; PA transmit antennas; collision avoidance systems; digital beamforming; frequency 77 GHz; integrated inphase modulators; integrated quadrature modulators; linear antenna array; long-range transmit phased-array radar system; multimode-beamforming FMCW radar system; multimode-beamforming frequency-modulated continuous-wave radar system; multiple-input multiple-output radar system; receive path; road vehicles; short-range frequency-division multiple-access radar system; transceiver chips; Antenna measurements; Frequency division multiaccess; Frequency modulation; MIMO; Radar; Radar antennas; FDMA; MIMO; multimode; phased array; radar;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697554
