Wave Absorber by Using Cylindrical Bars with Magnetic Loss Covers Arranged Metallic Mesh for Installing between ETC Lanes

Author

Matsumoto, Kouta ; Kitamoto, Atsushi ; Nakamura, Takuya ; Hashimoto, Osamu ; Aoyagi, Takahiro ; Miyamoto, Takashi

Author_Institution

Coll. of Sci. & Eng., Aoyama Gakuin Univ., Sagamihara

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

The wave absorber composed of cylindrical bars arranged periodically and metallic mesh for improving visibility is proposed for ETC, and characteristics of reflectivity and shielding effect are evaluated analytically and experimentally. As a result, reflectivity of -10 dB and shielding effect of -25 dB are obtained for circularly polarized wave when the gap between cylindrical bars is 30 mm. Therefore, realization of proposed wave absorber for installing between ETC lanes can be clarified.

Keywords

electromagnetic shielding; electromagnetic wave absorption; electromagnetic wave polarisation; electromagnetic wave reflection; ETC lanes; circularly polarized wave; cylindrical bars; magnetic loss; metallic mesh; reflectivity effect; shielding effect; wave absorber; Bars; Conducting materials; Educational technology; Magnetic losses; Magnetic materials; Magnetic shielding; Microwave technology; Polarization; Reflectivity; Sheet materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554904

Filename

4554904