电子学报 ›› 2016, Vol. 44 ›› Issue (4): 775-779.DOI: 10.3969/j.issn.0372-2112.2016.04.004

• 学术论文 • 上一篇    下一篇

高隔离度宽带双极化微带天线设计

张健丰, 李平辉, 朱彤   

  1. 解放军理工大学通信工程学院, 江苏南京 210007
  • 收稿日期:2015-04-20 修回日期:2015-07-26 出版日期:2016-04-25
    • 作者简介:
    • 张健丰 男,1990年9月生于重庆万州.现为解放军理工大学通信工程学院硕士研究生.主要研究方向为天线技术和微波毫米波技术. E-mail:zjf1qaz@163.com;李平辉 男,1966年1月生于福建福州.现为解放军理工大学副教授、硕士生导师.主要研究方向为微波电路设计、天线技术及电磁场数值计算. E-mail:lph8210@126.com

Design of Wideband Dual-Polarized Microstrip Antenna with High Isolation

ZHANG Jian-feng, LI Ping-hui, ZHU Tong   

  1. College of Communications Engineering, PLA University of Science and Technology, Nanjing, Jiangsu 210007, China
  • Received:2015-04-20 Revised:2015-07-26 Online:2016-04-25 Published:2016-04-25

摘要:

双极化天线由于具有极化分离的优异性能,在无线通信系统中引起了广泛关注,因此本文设计了一个高隔离度宽带双极化微带缝隙天线.为了获得高隔离度特性,该天线采用两个不同结构的微带线馈电,分别激励起垂直极化和水平极化模式.同时在地板上开缝隙来展宽天线带宽和实现天线的小型化.仿真优化结果表明,该天线端口1和端口2的阻抗带宽分别为51%和62%,在1.71GHz~2.69GHz整个工作频带范围内两端口之间的隔离度高于40dB,且结构简单,适用于移动通信的实际应用中.

关键词: 双极化, 高隔离度, 宽带, 缝隙天线

Abstract:

Dual-polarized antennas have aroused much attention in wireless communication systems due to the excellent performance of polarization diversity.Therefore,a broadband dual-polarized microstrip slot antenna with high port isolation is proposed.Two feeder lines of different structures are employed to excite the horizontal and vertical polarization modes and obtain high port isolation.Furthermore,the broadband and miniaturization characteristics of the antenna are achieved by etching slots on the ground plane.The simulation results indicate that the bandwidth of port 1 and port 2 are 51% and 62% respectively,and the port isolation is higher than 40 dB from 1.71GHz to 2.69GHz.It has a simple structure and is suitable for practical applications of mobile communications.

Key words: dual-polarized, high port isolation, broadband, slot antenna

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