基于方环互联型频选表面单元的双频共口径天线  

Dual-band Co-aperture Antenna Based on Square-loop Interconnected Frequency-selective surface element

作　　者：苏国生 陈强 王强 SU Guosheng;CHEN Qiang;WANG Qiang(Comba Telecom Technology(Guangzhou)Co.,Ltd.,Guangzhou 510663)

机构地区：[1]京信通信技术(广州)有限公司,广东广州510663

出　　处：《长江信息通信》2024年第11期144-146,共3页Changjiang Information & Communications

摘　　要：移动通信基站天线的小型化一直以来都是研究的热点,随着频段的增加,多频共口径天线不同频段的单元间距越来越小,相互间的影响也越来越大。针对低频(1710~2170MHz)天线的散射导致的高频方向图畸变问题,提出了方环互联频率选择表面及低频透波单元的设计方法,并应用于双频共口径天线中。高频(3400~3800MHz)天线增加提出的低频透波单元后方向图基本吻合,平均增益仅下降0.19dB,同时平均波束指向由5.9°变成1.7°,利用该规律可以优化高频方向图的波束偏斜。设计的双频共口径天线适用于4G/5G移动通信,为多频天线方向图畸变及波束偏斜等问题提供了解决思路。The miniaturization of mobile communication base station antennas has always been a research hotspot.With the increase of frequency bands,the element spacing of different frequency bands of multi-band co-aperture antennas is becoming smaller and smaller,and the influence between them is also increasing.In order to solve the problem of high band radiation pattern distortion caused by the scattering of low band(1710~2170MHz)antennas,the design methods of square loop interconnected frequency selective surfaces and low band electromagnetic transparent element are proposed and applied to dual-band co-aperture antennas.The pattern of the high band(3400~3800MHz)antenna with the proposed low band electromagnetic transparent element is consistent,the average gain only decreases by 0.19dB,and the average beam direction changes from 5.9°to 1.7°,which can be used to optimize the beam squint of the high band radiation pattern.The designed dual-band co-aperture antenna is suitable for 4G/5Gmobile communication,which provides a solution to the problems such as pattern distortion and beam squint of multi-band antenna.

关 键 词：基站天线 双频共口径天线 频率选择表面 透波天线 

分 类 号：TN929.5[电子电信—通信与信息系统]