Title :
A Novel Wide-Band Butler Matrix for Vehicle Radars at 24GHz
Author :
Corona-Chavez, Alonso ; Llamas-Garro, Ignacio ; Kim, Jung Mu ; Kim, Yong Kweon
Author_Institution :
Opticay Electron., Puebla
Abstract :
There is a great scientific and commercial interest in car radars for anti-crash and pre-crash systems, for which beamformer networks with antenna arrays are becoming the norm. In this paper a novel Butler matrix at 24 GHz using a new type of micromachined suspended transmission-line couplers presented. This configuration arranges all the couplers in the center so that no line crossovers are needed. This circuit has been micromachined on a glass-quartz substrate and BCB layers have been used to suspend the transmission lines of the coupler. In this paper the fabrication method will be fully described, simulated and preliminary experimental results are presented.
Keywords :
coupled transmission lines; micromachining; road vehicle radar; Butler matrix; beamformer networks; frequency 24 GHz; glass-quartz substrate; micromachining; transmission-line couplers; vehicle radars; Antenna arrays; Butler matrix; Circuit simulation; Couplers; Distributed parameter circuits; Fabrication; Radar antennas; Transmission line matrix methods; Transmission lines; Vehicles;
Conference_Titel :
Electronics, Communications and Computers, 2008. CONIELECOMP 2008, 18th International Conference on
Conference_Location :
Puebla
Print_ISBN :
978-0-7695-3120-5
DOI :
10.1109/CONIELECOMP.2008.37
