Wideband balun filtering quasi-Yagi antenna with high selectivity

被引：6
|
作者：
Song, Lei [1 ]
Wu, Bian [1 ]
Xu, Mei [1 ]
Su, Tao [1 ]
Lin, Lei [2 ]
机构：
[1] Xidian Univ, Sch Elect Engn, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Shaanxi, Peoples R China
[2] Nanjing Res Inst Elect Technol, Nanjing, Jiangsu, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2019年 / 61卷 / 10期
基金：
中国国家自然科学基金;
关键词：
balun filter; filtering antenna; high selectivity; quasi-Yagi antenna; wideband;
D O I：
10.1002/mop.31903
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 compact wideband balun filtering quasi-Yagi antenna with high selectivity is proposed. It consists of a quasi-Yagi antenna integrated with a multilayer balun filter. The quasi-Yagi antenna is composed of a bow-tie driver coupled with a director on the top layer, and a ground reflector on the bottom layer. The fourth-order balun filter has two stepped impedance resonators (SIRs) on the top layer, and two SIRs on the middle layer, which helps improve the frequency selectivity and bandwidth. Moreover, it has two differential ports to feed the quasi-Yagi antenna. The filtering antenna centered at 2.5 GHz with a wide bandwidth of 22.8% and a pair of transmission zeros is designed and fabricated, which shows a stable radiation pattern with maximum gain of 5.5 dBi and high selectivity.
引用
收藏
页码：2336 / 2341
页数：6
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