A Broadband Low-Profile Circular-Polarized Antenna on an AMC Reflector

被引：85
作者：
Feng, Dan [1 ]
Zhai, Huiqing [1 ]
Xi, Lei [1 ]
Yang, Sen [1 ]
Zhang, Kedi [1 ]
Yang, Dong [1 ]
机构：
[1] Xidian Univ, Natl Key Lab Sci & Technol Antennas & Microwaves, Sch Elect Engn, Xian 710071, Shaanxi, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷
基金：
中国国家自然科学基金;
关键词：
Artificial magnetic conductor (AMC); broadband antenna; circular polarization; dipole; BASE STATION APPLICATIONS; MAGNETIC-CONDUCTOR; DIPOLE ANTENNA; PRINTED DIPOLE; COUPLED-LINE;
D O I：
10.1109/LAWP.2017.2749246
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 broadband low-profile circular-polarized (CP) antenna on an artificial magnetic conductor (AMC) reflector is proposed in this letter. The basic wideband circular polarization radiation characteristic of the antenna is achieved by feeding broadband crossed dipole through a 90 degrees phase shifter. An AMC reflector is further introduced to realize a broadband low-profile CP antenna. The impedance bandwidth (VSWR < 2) of the present CP antenna is about 1.19-2.37 GHz (66.3%), and the axial-ratio (AR) bandwidth (AR < 3 dB) is about 1.25-1.97 GHz (44.7%). The antenna has a low profile of 20.1 mm (about 0.12.0 at the center frequency of 1.78 GHz). The simulated and measured results show that the proposed CP antenna has wide impedance and AR bandwidth in the condition of low profile.
引用
收藏
页码：2840 / 2843
页数：4
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