Wideband and Low-Cross-Polarization Planar Annual Ring Slot Antenna

被引：14

作者：

Chen, Chunhong ^{[1
]}

Li, Chengqiang ^{[1
]}

Zhu, Zhimin ^{[1
]}

Wu, Wen ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Elect Engn & Optoelect Technol, Ministerial Key Lab JGMT, Nanjing 210094, Jiangsu, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷

关键词：

Differential feed; low cross polarization; ring slot antenna; substrate integrated waveguide (SIW) back cavity; wideband; MICROSTRIP PATCH ANTENNA; HIGH-GAIN; ARRAY;

D O I：

10.1109/LAWP.2017.2757963

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：

This letter presents the design of a wideband and low cross-polarization single-layer annual ring slot antenna. By adopting differential feeding, the cross-polarization level could effectively be lowered while ensuring a low antenna profile. The structure of the substrate integrated waveguide back cavity improved the antenna gain, and the extra two short-circuit stubs added a new resonance point, extending the bandwidth. Furthermore, a modified circular ring slot was adopted to further improve cross-polarization performance. The measured -10 dB impedance bandwidth of the antenna was 51% (9-15.17 GHz), the gain in passband was about 9 dBi, and the cross-polarization level was below -35 dB. Compared to other similar antennas, the proposed antenna features an apparent improvement in terms of gain, cross-polarization level, and bandwidth.

引用

页码：3009 / 3013

页数：5

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