Active Frequency Selective Surfaces Using Incorporated PIN Diodes

被引：6
|
作者：
Chang, Kihun [1 ]
Kwak, Sang il [2 ]
Yoon, Young Joong [1 ]
机构：
[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea
[2] Yonsei Univ, Radio Technol Res Dept, Elect & Telecommun Res Inst, Taejon, South Korea
来源：
IEICE TRANSACTIONS ON ELECTRONICS | 2008年 / E91C卷 / 12期
关键词：
frequency selective surfaces; PIN diode; active FSS; equivalent circuit modeling; surface impedence;
D O I：
10.1093/ietele/e91-c.12.1917
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：
In this paper, active frequency selective surfaces (FSS) having a squared aperture with a metal plate loading are described. Active FSS elements using switched PIN diodes are discussed with an equivalent circuit model. A unit cell consists of a square aperture element with metal island loading and one PIN diode placed at the upper gap. considering the vertical polarization. The electromagnetic properties of the active FSS structure are changed by applying do bias to the substrate. and they can be estimated by the equivalent circuit model of the FSS structure and PIN diode. This active FSS design enables transmission to be switched on or off at 2.3 GHz. providing high transmission when the diodes are in an off state and high isolation when the diodes are on. The equivalent circuit model in the structure is investigated by analyzing transmission and reflection spectra. Measurements on active FSS are compared with numerical calculations. The experimentally observed frequency responses are also scrutinized.
引用
收藏
页码：1917 / 1922
页数：6
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