Title :
Two-layered wave absorber using short carbon fibers having broadband characteristics
Author :
Kato, Shunki ; Yasuzumi, Takenori ; Hashimoto, Osamu ; Tanaka, Toshiaki
Author_Institution :
Dept. of Electr. Eng. & Electron., Aoyama Gakuin Univ., Sagamihara, Japan
Abstract :
In this paper, two-layered wave absorber using short carbon fibers is proposed. The absorber is composed of short carbon fibers, which is attached to polyester fibers on a surface of polystyrene foam, and a metal plate as a reflector. Absorption characteristics of the absorber with one-layer showed that matching frequencies could controlled by the thickness of spacer and the length of carbon fibers. Then the absorber with two-layer using different length of carbon fibers was investigated. From these results, we prospected that absorption characteristics of each length of fibers were working independently. Measured results of the optimized absorber showed that the bandwidth over 10 dB absorption is for 1.5 to 12.0 GHz.
Keywords :
carbon fibres; electromagnetic wave absorption; electromagnetic wave reflection; inhomogeneous media; microwave materials; C; absorption characteristics; broadband characteristics; frequency 1.5 GHz to 12 GHz; metal plate reflector; polyester fiber; polystyrene foam; short carbon fiber; two layered wave absorber; Absorption; Bandwidth; Carbon; Impedance; Metals; Surface impedance; Surface waves; Carbon fibers; broadband; light weight; polystyrene foam; two-layered wave absorber;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
