Gain Improvement in Time-Modulated Linear Arrays Using SPDT Switches

被引：41

作者：

Zhu, Quanjiang ^{[1
]}

Yang, Shiwen ^{[1
]}

Yao, Ruilin ^{[1
]}

Nie, Zaiping ^{[1
]}

机构：

[1] UESTC, Sch Elect Engn, Chengdu 611731, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2012年 / 11卷

关键词：

Antenna arrays; radio frequency (RF) switch; time modulation; DIFFERENTIAL EVOLUTION; SUPPRESSION;

D O I：

10.1109/LAWP.2012.2213292

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：

Time-modulated linear arrays (TMLAs) based on single-pole-single-throw (SPST) switches usually have higher reduction in gain due to the sideband radiation and power absorption of the off-state absorptive switches. In this letter, a novel approach is proposed to improve the gain of TMLAs using single-pole-double-throw (SPDT) switches. The gain of the proposed TMLA can be improved significantly by controlling two array elements with each SPDT switch. Moreover, the proposed TMLA has a constant instantaneous directivity, which is favorable for some applications. Numerical results are presented to illustrate the proposed approach by considering a 16-element linear array with a -30 dB sidelobe level.

引用

页码：994 / 997

页数：4

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