Paper Title:

Comparison Analysis of Absorption Properties for Microwave Absorbent

Periodical Key Engineering Materials (Volumes 512 - 515)
Main Theme High-Performance Ceramics VII
Edited by Wei Pan and Jianghong Gong
Pages 1132-1135
DOI 10.4028/www.scientific.net/KEM.512-515.1132
Citation Xu Liang Lv et al., 2012, Key Engineering Materials, 512-515, 1132
Online since June, 2012
Authors Xu Liang Lv, Chao Wu, Zhao Yang Zeng
Keywords Absorbing Materials, EM Parameter, Maxwell-Garnett Theory, Microwave Absorbent
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Abstract

In order to compare the absorbing properties of different microwave-absorbing agents and their mixture, this paper has selected two typical microwave-absorbing agents which respectively are carbon fiber resistance microwave-absorbing agents and ferrite magnetism microwave-absorbing agents, and took them as monolayer absorbing materials. Then used MG formula to calculate the effective electromagnetic parameter of their mixture under different proportion at X band, and finally analyzed their absorbing properties separately. Then through contrasting the impedance matching characteristic and attenuation coefficient of the materials, it is proved that adding carbon fiber in ferrite can not improve absorption properties. Although the ability of attenuating electromagnetic wave would be enhanced when resistance materials and magnetism materials are blend with each other, doping will destroy the materials’ impedance matching characteristic because most resistance materials have high permittivity. It makes reflection strengthen and can not improve absorbing properties.