Theory and Realization of a Pattern-Reconfigurable Antenna Based on Two Dipoles

被引：25
作者：
Li, Ronglin [1 ]
Yang, Huan [1 ]
Liu, Baiyang [1 ]
Qin, Yue [1 ]
Cui, Yuehui [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2018年 / 17卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Bandwidth enhancement; dipole antenna; front-to-back ratio (F/B); pattern reconfiguration; PRINTED DIPOLE;
D O I：
10.1109/LAWP.2018.2842740
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 front-to-back pattern-reconfigurable antenna based on two dipoles is investigated. The theory for a front-to-back pattern reconfiguration is analyzed. The front-to-back ratio (F/B) is improved by using two folded dipoles. The pattern-reconfigurable antenna is realized by switching two PIN diodes with two broadband baluns. Two parasitic elements are introduced for the improvement of impedance bandwidth and pattern bandwidth. A shorter dipole is added to each folded dipole for further enhancing the pattern bandwidth. Experimental results show that the pattern-reconfigurable antenna achieves a bandwidth of 31.4% for return loss > 10 dB and a pattern-bandwidth of 20.8% for F/B > 10 dB and 11.5% for F/B > 15 dB.
引用
收藏
页码：1291 / 1295
页数：5
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