A two-layer dielectric absorber covering a wide frequency range

被引：39

作者：

Luo, Fa ^{[1
]}

Zhu, Dong-mei ^{[1
]}

Zhou, Wan-cheng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2007年 / 33卷 / 02期

基金：

中国国家自然科学基金;

关键词：

dielectric properties; SiC; glass-ceramic; reflectivity;

D O I：

10.1016/j.ceramint.2005.09.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A two-layer dielectric absorber for use as high temperature radar wave-absorbing material was developed by hot-pressing nanometer SiC and LAS glass-ceramic. The complex permittivity of the hot-pressed LAS glass-ceramic and SiC/LAS composite was investigated at 8.2-12.4 GHz. Results show that the real and imaginary parts of the permittivities of the SiC/LAS composites greatly increase as the content of the nanometer SiC powders increases. Based on the test results, a two-layer ceramic absorber, composed of LAS layer and SiC/LAS layer, covering a wide frequency range was designed and prepared. Its reflectivity at 8.2-12.4 GHz is less than -6 dB. (c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：197 / 200

页数：4

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