Title :
Microwave absorber for 24GHz short range automotive radar system
Author :
Dong Woo Hahn ; Kyung Sub Lee
Author_Institution :
R&D Center, Donghyun Electron., Pyeongtaek, South Korea
Abstract :
An electromagnetic wave absorber for 24GHz short range automotive radar was suggested. Electromagnetic wave absorbers were prepared by dispersing graphite or/and carbon micro coil (CMC) in silicone rubber matrix. It was found that microwave absorber manufactured 18.5wt% of graphite and 1.5wt% of CMC attenuated the wave by 21.5dB, which corresponds to absorption of about 99.3% of incident electromagnetic energy, at adjacent 24GHz. The thickness of the sample was 0.85mm, which is thin enough to be applied in tiny automotive radars. It was also found that the high dielectric loss due to the 3-D helical structure of CMC is in accordance with the electromagnetic wave absorbing property.
Keywords :
dielectric losses; electromagnetic wave absorption; graphite; microwave materials; road vehicle radar; silicone rubber; 3D helical structure; C; CMC attenuation; carbon microcoil; dielectric loss; electromagnetic wave absorber; frequency 24 GHz; graphite; microwave absorber; short range automotive radar system; silicone rubber matrix; size 0.85 mm; Carbon; Transmission line matrix methods;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0953-0
DOI :
10.1109/VPPC.2012.6422782
