Title :
MEMS automotive collision avoidence radar beamformer
Author :
Sinjari, Ahmad ; Chowdhury, Sazzadur
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Windsor, Windsor, ON
Abstract :
The design of a MEMS-based Rotman lens beamformer that uses a high dielectric constant lead zirconium titanate (PZT) thick film as the insulating material inside the lens cavity has been presented. The 56 mum thick Rotman lens has a footprint area of 5.5 times 7.1 mm , incorporates 3 beam ports, 5 array ports, and operates at 77 GHz. The lens has been designed to have a mainlobe gain of 35 dB with a scan angle of 4 degrees. The small size of the Rotman lens beamformer enables to stack it vertically or horizontally to realize a compact MEMS-based radar when used in conjunction with microstrip antennas and necessary microelectronics circuits. The device could be used for an automotive collision avoidance system to detect the proximity of other vehicles or obstacles.
Keywords :
high-k dielectric thin films; insulating thin films; lead compounds; lens antennas; micromechanical devices; microstrip antennas; millimetre wave antennas; radar antennas; road vehicle radar; MEMS automotive collision avoidance radar beamformer design; PZT; Rotman lens beamformer; frequency 77 GHz; gain 35 dB; high dielectric constant lead zirconium titanate thick film; insulating material; lens design; microelectronics circuits; microstrip antennas; proximity detection; size 5.5 mm; size 56 mum; size 7.1 mm; Automotive engineering; High-K gate dielectrics; Lenses; Micromechanical devices; Microstrip antennas; Optical design; Radar antennas; Thick films; Titanium compounds; Zirconium;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541860
