Isolation and Bandwidth Improvements of Multimode Single MPA With Copolarized Pattern Using Characteristic Modes Analysis

被引：14

作者：

Liu, Neng-Wu ^{[1
]}

Huang, Bing-Bing ^{[1
]}

Zhu, Lei ^{[2
]}

Fu, Guang ^{[1
]}

机构：

[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China

[2] Univ Macau, Fac Sci & Technol, Dept Elect & Comp Engn, Macau 999078, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Characteristic mode analysis; enhanced isolation; microstrip patch antenna; wide bandwidth; POLARIZED PATCH ANTENNA; DESIGN; REDUCTION;

D O I：

10.1109/LAWP.2023.3242087

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 low-profile microstrip patch antenna (MPA) with isolation-bandwidth enhancement is proposed via characteristic mode analysis. First, the MPA under different modes is deeply studied. It demonstrates that the unused modes could be suppressed via the loaded pins. Then, by combining the magnetic wall and electrical wall together of two modes via the pins3, the nulls of the electric fields could be shifted to the unexcited port, thus gaining two minimum mutual coupling poles. After that, the length of the radiator is enlarged to move these two poles together for isolation bandwidth improvement in order to reshape the nonbroadside pattern. Finally, our proposed MPA is fabricated and tested. The results illustrate that its 20 dB isolation bandwidth has been widened to about 2.1% ranging from 4.2 to 4.29 GHz. In addition, it still holds the single-layer, single radiator, and low-profile properties.

引用

页码：1356 / 1360

页数：5

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