Title :
A micromachined wide-band suspended-line coupler at 24GHz for vehicle radar applications
Author :
Corona-Chavez, Alonso ; Llamas-Garro, Ignacio ; Kim, Jung-Mu ; Kim, Yong-Kweon
Author_Institution :
Nat. Inst. for Astrophys., Puebla
Abstract :
Directional couplers have extensive applications in microwave circuits such as beamforming networks. Recently there has been growing scientific and commercial interest in microwave components for anti-crash and pre-crash systems in cars centered at 24 GHz. In this paper a novel suspended transmission-line 3 dB coupler at 24 GHz is presented. 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 simulated and experimental results are presented and the fabrication method described.
Keywords :
directional couplers; glass; micromachining; microwave circuits; road vehicle radar; substrates; transmission lines; directional couplers; frequency 24 GHz; glass-quartz substrate; micromachined wide-band suspended-line coupler; microwave circuits; microwave components; vehicle radar; Array signal processing; Circuit simulation; Coupling circuits; Directional couplers; Distributed parameter circuits; Fabrication; Microwave circuits; Radar applications; Transmission lines; Vehicles; BCB; Transmission line couplers; multiple layer coupling structures; surface micromachining;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429662
