Broadband omnidirectional patch antenna with horizontal gain enhanced by near-zero-index metamaterial cover

被引：18
作者：
Guo, Yao [1 ]
Zhao, Jing [2 ]
Hou, Quanwen [1 ]
Zhao, Xiaopeng [1 ]
机构：
[1] Northwestern Polytech Univ, Dept Appl Phys, Xian 710129, Peoples R China
[2] Medtron Plc, Boulder, CO 80301 USA
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2020年 / 14卷 / 07期
基金：
中国国家自然科学基金;
关键词：
microstrip antennas; directive antennas; metamaterial antennas; antenna radiation patterns; broadband antennas; omnidirectional antennas; microwave metamaterials; horizontal gain; near-zero-index metamaterial cover; vertical gain; broadband omnidirectional patch antenna; NZIM; MONOPOLE ANTENNA; LOW-PROFILE;
D O I：
10.1049/iet-map.2019.0806
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：
Enhancing the horizontal gain of the omnidirectional patch antenna is always a problem with great difficulty. Inspired by near-zero-index metamaterial (NZIM) cover that can improve the vertical gain of a directional patch antenna, the authors designed two kinds of NZIMs that are placed above the broadband omnidirectional antenna to enhance the horizontal gain. Simulated and measured results indicate that both covers can increase the values of horizontal gain >50% (1 dBi) at various frequencies in all directions, which provides a new approach to improve the horizontal gain of the broadband omnidirectional patch antenna.
引用
收藏
页码：671 / 676
页数：6
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