A Broadband ±45° Dual-Polarized Multidipole Antenna Fed by Capacitive Coupling

被引：26
作者：
Chen, Yanzheng [1 ]
Lin, Wenbin [1 ]
Li, Song [2 ]
Raza, Ali [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Sichuan, Peoples R China
[2] Sichuan Taoguang Co, Chengdu 610041, Sichuan, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 05期
基金：
中国国家自然科学基金;
关键词：
+/- 45 degrees dual polarization; capacitive coupling; H-shaped coupler; multidipole; 2G/3G/LTE BASE STATIONS; DIPOLE ANTENNA; WIDE-BAND; PLANAR ANTENNA; GAIN;
D O I：
10.1109/TAP.2018.2810327
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 +/- 45 degrees dual-polarized multidipole antenna is proposed in this communication. A pair of big dipoles and a pair of small ones are printed on a square substrate. The large dipoles mainly dominate the low operating frequency of the antenna, while the small dipoles work at the high one. A pair of H-shaped coupler is introduced to feed the antenna through capacitive coupling with loop radiator dipoles, and a rectangular box-shaped reflector is used for keeping the radiation patterns over the operating frequency. The antenna achieved a wide impedance bandwidth of about 56.6% for VSWR < 1.5 at both ports, covering the frequency range from 1.66 to 2.97 GHz. Over the operating frequency, a gain > 8.1 dBi is achieved for both ports. A stable radiation pattern with 3 dB beamwidth 62 degrees +/- 6 degrees at E-plane and 75 degrees +/- 3 degrees at H-plane for port 1 and 60 degrees +/- 4 degrees at E-plane and 71 degrees +/- 5 degrees at H-plane for port 2 is obtained. The antenna is manufactured and tested. The measured results of the antenna are in well agreement with the simulation ones. Design details of the proposed antenna are presented and discussed.
引用
收藏
页码：2644 / 2649
页数：6
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