Ultra-thin tunable microwave absorber using liquid crystals

被引：21
作者：
Fusco, V. F. [1 ]
Cahill, R. [1 ]
Hu, W. [1 ]
Simms, S. [1 ]
机构：
[1] Queens Univ Belfast, Inst Elect Commun & Informat Technol, Belfast BT3 9DT, Antrim, North Ireland
来源：
ELECTRONICS LETTERS | 2008年 / 44卷 / 01期
关键词：
D O I：
10.1049/el:20082191
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A dynamically adaptive radar absorber is described which is based on a periodic array of microstrip patches that are printed on a 500 mu m-thick liquid crystal substrate. The measured reflectivity of the structure is less than -38 dB with a 200 MHz -10 dB bandwidth at 10.19 GHz when a +4 DC bias is applied. It is shown that a 34 dB reduction in signal loss occurs when the bias voltage is increased to 20 V.
引用
收藏
页码：37 / U47
页数：2
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