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Liquid crystal tunable mm wave frequency selective surface

被引：134
作者：
Hu, Wenfei [1 ]
Dickie, Raymond
Cahill, Robert
Gamble, Harold
Ismail, Yusof
Fusco, Vincent
Linton, David
Grant, Norman
Rea, Simon
机构：
[1] Queens Univ Belfast, Inst Elect Commun & Informat Technol, Belfast BT3 9DT, Antrim, North Ireland
[2] Queens Univ Belfast, No Ireland Semicond Res Ctr, Belfast BT9 5AH, Antrim, North Ireland
[3] EADS, Earth Observ, Navvigat & Sci Div, Portsmouth PO3 5PU, Hants, England
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2007年 / 17卷 / 09期
基金：
英国工程与自然科学研究理事会;
关键词：
antennas; filters; frequency selective surface (FSS); liquid crystals; quasi-optics; reconfiguiable;
D O I：
10.1109/LMWC.2007.903455
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 frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented. The device consists of two printed arrays of slot elements which are separated by a 130-mu m thick layer of liquid crystals. A 3% shift in the filter passband occurs when the substrate permittivity is increased by applying a control signal of 10 V. Measured results show that the insertion loss increases from -3.7 dB to -10.4 dB at resonance (134 GHz), thus demonstrating the potential to create a FSS which can be switched between a transmitting and a reflecting structure.
引用
收藏
页码：667 / 669
页数：3
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