一种宽带双极化印刷振子基站天线单元的设计  

A Novel Design of Broadband Dual-Polarized Printed Dipole Antenna for Base Stations

作　　者：王灿[1] 葛悦禾[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2014年第2期132-135,共4页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目2012J01276);华侨大学高层次人才科研启动项目(11BS301);毫米波国家重点实验室开放客体科研基金资助项目(K201212)

摘　　要：设计一种可用于W-CDMA，TD-SCDMA等2G／3G／4G-LTE通信标准网络的宽频带双极化印刷振子基站天线单元．天线由两个双层贴片结构十字交叉组成，在馈电巴伦底部采取梯形弯曲结构，提高了双端口的隔离度，便于组装；在贴片双臂上端附加短路T形贴片结构，展宽了带宽．实测结果表明：天线两端口电压驻波比≤1．5的带宽均达到66．7％（1．65～3．30GHz），带宽内隔离度大于25dB，带内增益为4．1～8．3dBi．A broadband dual-polarized printed dipole antenna is developed for WCDMA, TD-SCDMA and some 2G/3G/ 4G-LET communication standard network. The antenna is composed of two double-layered printed dipoles whose polari- zations are perpendicular to each other. There is a bending stair-shaped structure adopted at the bottom of strip-line balun to improve the isolation between the two port, suitable for the integration with the antenna feed network. T-shaped patchs are proposed to connect to the double-layered dipole symmetrically, to improve the bandwidth. Measurement re- sults show that the bandwidth of the proposed antenna, achieves 66.7% for voltage standing wave ratio≤l. 5（1.65-3.30 GHz）. The isolation within the bandwidth is over -25 dB and the gain is within 4. 1-8. 3 dBi.

关 键 词：印刷偶极子 宽带 双极化 基站天线 

分 类 号：TN828.6[电子电信—信息与通信工程]