Development of the EM Wave Absorber for ETC System Using MnZn-ferrite and Carbon

Author

Song, Young Man ; Kim, Dong Il ; Choi, Chang-Mook ; Lee, Dae Hee

Author_Institution

Dept. of Radio Sci. & Eng., Korea Maritime Univ. Dongsam-Dong, Busan

fYear

2007

fDate

15-16 Nov. 2007

Firstpage

85

Lastpage

88

Abstract

In this paper, we designed and fabricated the EM wave absorber for ETC system. We fabricated some samples in different composition ratio of MnZn-ferrite and Carbon with CPE and confirmed that optimum composition ratio of absorbing materials was MnZn-ferrite : carbon : CPE = 40 : 15 : 45 wt.%. The material properties such as complex relative permittivity and permeability were calculated by S-parameter. The EM wave absorber was fabricated based on simulated data. Simulated and measured data agree well. As a result, the developed EM wave absorber has a thickness of 3.38 mm and absorption ability over 20 dB at 5.8 GHz.

Keywords

absorbing media; automated highways; carbon; electromagnetic wave absorption; ferrites; manganese alloys; microwave materials; C; C - Element; EM wave absorber; ETC system; MnZn; MnZn - Interface; MnZn-ferrite; absorbing materials; carbon; electric toll collection system; electromagnetic wave absorption; size 3.38 mm; Absorption; Equations; Material properties; Organic materials; Permeability; Permittivity measurement; Reflection; Roads; Scattering parameters; Sheet materials; Carbon; EM wave Absorption; EM wave absorber; ETC system; MnZn-ferrite;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. KJMW 2007. Korea-Japan

Conference_Location

Okinawa

Print_ISBN

978-1-4244-1556-4

Type

conf

DOI

10.1109/KJMW.2007.4402246

Filename

4402246