一种双金属板加载的水平极化全向天线  

A horizontal-polarized omnidirectional antenna with dual metal reflectors

作　　者：高国明[1] 陈文俊[1] 袁洪[1] 简玲[1] 

机构地区：[1]中国船舶重工集团公司第七二四研究所,南京210003

出　　处：《雷达与对抗》2012年第1期33-35,52,共4页Radar & ECM

摘　　要：设计了一种双金属板加载水平极化全向天线,包括顶端反射板、微带天线、支撑介质柱和底端反射板等4个部分。微带天线由4个弧形微带偶极子沿圆周排列组成;介质柱的法兰固定天线;顶端和底端金属板对称地放置于微带天线上下两侧,调整顶端和底端金属板的尺寸可以改变波瓣仰角。仿真结果表明,天线在10%的相对频带内端口驻波小于1.5;方位面内增益高于2.3 dB,增益起伏小于1 dB,交叉极化电平低于-30 dB。测试结果表明,在频带内端口驻波小于1.7;方位面波瓣起伏约2.1 dB。A horizontal-polarized omnidirectional antenna with dual metal reflectors is designed including the microstrip antenna,dielectric supports,and reflectors at the top and bottom.Aligned along the circle,four arc-shaped microstrip dipoles make up the microstrip antenna,which is fixed by the flanges of the dielectric supports.The reflectors at the top and bottom,whose sizes can be adjusted to change the elevation of the lobes,are symmetrically placed on the upper and lower sides of the microstrip antenna.The simulation results show that the VSWR of the port is less than 1.5 within 10% relative band.The antenna gain is more than 2.3 dB in the azimuth plane with the fluctuation less than 1 dB,and the cross-polarization level is lower than-30 dB.The test results show that the VSWR of the port within the band is less than 1.7,and the fluctuation of the lobes in the azimuth plane is about 2.1 dB.

关 键 词：全向天线 水平极化 金属板加载 支撑介质柱 

分 类 号：TN821.1[电子电信—信息与通信工程]