Frequency and beam reconfigurable antenna using photoconducting switches

被引：229
|
作者：
Panagamuwa, CJ [1 ]
Chauraya, A [1 ]
Vardaxoglou, JC [1 ]
机构：
[1] Univ Loughborough, Wireless Commun Res Grp, Ctr Mobile Commun Res, Dept Elect & Elect Engn, Loughborough LE11 3TU, Leics, England
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2006年 / 54卷 / 02期
关键词：
dipole antenna; frequency control; optical switches; silicon;
D O I：
10.1109/TAP.2005.863393
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 design for an optically reconfigurable printed dipole antenna is presented. A wideband coplanar waveguide (CPW) to coplanar stripline (CPS) transition is used to feed the balanced printed dipole. Two silicon photo switches are placed on small gaps in both dipole arms equidistant from the centre feed. Light from two infrared laser diodes channelled through fiber optic cables is applied to the switches. With the gaps in the dipole bridged, the antenna resonates at a lower frequency. Measured return loss results that compare well to the simulated values are also presented, showing a frequency shift of nearly 40%. The change in bore-sight gain along with radiation patterns are also presented. Activating each switch individually results in a near 50 degrees shift in beam nulls.
引用
收藏
页码：449 / 454
页数：6
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