一种应用于2G/3G/LTE室内分布系统的双宽频、双极化天线  

Dual Wideband, Dual Polarized Antenna for 2G/3G/LTE Indoor Distribution System

作　　者：周宇 赖杰鑫 冯波涛 Zhou Yu;Lai Jiexin;Feng Botao(Foshan Naer Detection Technology Co.,Ltd.,Foshan Guangdong 525400,China;School of Electronic Science and Technology,Shenzhen University,Shenzhen Guangdong 518060,China)

机构地区：[1]佛山纳耳检测技术有限公司,广东佛山525400 [2]深圳大学电子科学与技术学院,广东深圳518060

出　　处：《信息与电脑》2018年第15期194-196,共3页Information & Computer

摘　　要：笔者提出了一种适用于2G/3G/LTE的双频双极化全向天线。天线的垂直极化单元由两个圆锥组成,可以实现较好的全向辐射特性以及宽频特性。环形天线圆形阵列和印刷偶极子天线圆形阵列分别被放置在垂直极化单元的顶端和中间,通过一个合路器将这两个圆形阵列连接起来作为水平极化辐射。仿真结果表明,该天线垂直极化单元实现790MHz^1.14 GHz和1.72~3.51 GHz的带宽,水平极化单元实现了806~980 MHz和1.68~2.99 GHz的带宽。水平极化单元低频增益为0.65±0.4 d Bi,高频增益为3.95±0.6 d Bi。垂直极化单元低频增益为1.75±0.5 d Bi,高频增益为4.35±1.0 d Bi,端口隔离度好,低交叉极化水平和全向增益稳定。In this paper,a dual frequency dual polarization omnidirectional antenna for 2G/3G/LTE is proposed.The vertical polarization unit of the antenna consists of two cones,which can achieve better omnidirectional radiation characteristics and broadband characteristics.Circular arrays of ring antennas and circular arrays of printed dipole antennas are placed at the top and center of the vertical polarization unit,respectively,and are connected as horizontal polarized radiation by a combiner.The simulation results show that the vertical polarization unit achieves the bandwidth of 790 MHz to 1.14 GHz and 1.72 to 3.51 GHz,and the horizontal polarization unit achieves the bandwidth of 806 to 980 MHz and 1.68 to 2.99 GHz.The low frequency gain of the horizontal polarization unit is 0.65+0.4 dBi,and the high frequency gain is 3.95+0.6 dBi.Vertical polarization unit has low-frequency gain of 1.75+0.5 dBi,highfrequency gain of 4.35+1.0 dBi,good port isolation,low cross-polarization level and omnidirectional gain stability.

关 键 词：2G/3G/LTE 室内分布系统 双宽频天线 双极化天线 

分 类 号：TN828.6[电子电信—信息与通信工程]