Circularly polarized 2-arm spiral antenna for 60-GHz applications

被引：4
|
作者：
Zhu, Jianfeng [1 ,2 ]
Liao, Shaowei [3 ,4 ]
Li, Shufang [1 ,2 ]
机构：
[1] Beijing Univ Posts & Telecommun, Key Lab Network Syst Architecture & Convergence, Beijing 100876, Peoples R China
[2] Beijing Univ Posts & Telecommun, Beijing Lab Adv Informat Network, Beijing 100876, Peoples R China
[3] City Univ Hong Kong, State Key Lab Millimeter Waves, Elect Engn Dept, Hong Kong, Hong Kong, Peoples R China
[4] CityU Shenzhen Res Inst, Shenzhen, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 12期
基金：
中国国家自然科学基金;
关键词：
circular polarization; differential feeding; millimeter-wave (mmWave); 2-arm spiral antenna; PLANAR APERTURE ANTENNA; MILLIMETER-WAVE APPLICATIONS; HIGH-GAIN;
D O I：
10.1002/mop.30890
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 wideband circularly polarized (CP) 2-arm spiral antenna is designed for 60-GHz applications in this letter. The proposed antenna is implemented on a single layer with spiral printed on the top surface of the substrate and fed in a differential way through 2 metallized via holes. Unidirectional radiation is achieved thanks to the presence of the ground plane, which is placed with a distance of one-quarter of the guided wavelength to the spiral. A cavity is mounted on the top of the spiral antenna to suppress the surface wave propagate along the substrate as well as to improve the antenna gain. Experimental results show that the prototype achieves the -10-dB impedance bandwidth from 55.2 to 66 GHz with circular polarization. The peak gain at boresight is 9.5 dBi occurring at 63 GHz and the radiation patterns are stable over the operating frequency band.
引用
收藏
页码：3119 / 3123
页数：5
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