Design of a Broadband High-Gain Omnidirectional Antenna With Low Cross Polarization Based on Characteristic Mode Theory

被引：15

作者：

Fu, Chen ^{[1
]}

Feng, Chunjie ^{[1
]}

Chu, Wubo ^{[1
]}

Yu, Yutao ^{[2
]}

Zhu, Xiaobo ^{[1
]}

Gu, Wenhua ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Peoples R China

[2] Inst Deep Percept Technol, Wuxi 600036, Jiangsu, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2022年 / 21卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Broadband antennas; Omnidirectional antennas; Antenna radiation patterns; Probes; Broadband communication; Bandwidth; Antennas; Broadband; characteristic mode (CM); low cross polarization; omnidirectional antenna; ULTRAWIDEBAND ANTENNA; MONOPOLE ANTENNA;

D O I：

10.1109/LAWP.2022.3179144

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, high-gain, and low cross-polarization omnidirectional antenna is proposed. The antenna structure is pretty concise with convenient probe feeding and sandwich-structure design. The characteristic mode analysis shows that the antenna can excite quasi-TM01 and quasi-TM02 modes in a broadband and, thus, results in monopole radiation mode and low cross polarization in a broad operating band. The full-wave simulation and experiments were performed to verify the antenna design. The fabricated prototype antenna showed <2 dB unroundness and <-25 dB cross polarization in (4.8-11.1) GHz, with a relative bandwidth of 79.2% and a peak gain of 8.4 dBi at 9 GHz.

引用

页码：1747 / 1751

页数：5

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