采用寄生贴片增加直馈微带带宽的一种设计方法  

A Design Method for Increasing the Bandwidth of Direct Feeding Microstrips by Using Parasitic Patches

作　　者：王郑杰 刘少朋 伍捍东 吴边[1] Wang Zhengjie;Liu Shaopeng;Wu Handong;Wu Bian(Xidian University,Xi’an 710071;Xi'an Hengda Microwave Technology Development Company,Xi'an 710100)

机构地区：[1]西安电子科技大学,西安710071 [2]西安恒达微波技术开发公司,西安710100

出　　处：《测控与通信》2019年第4期34-37,共4页

摘　　要：本文设计1款宽带(12%)扇形波束微带天线时,采用在直馈辐射贴片的上方引入寄生贴片和悬置带状线宽带馈电网络,拓宽了直馈微带贴片阵列天线的带宽。由于低副瓣的要求,在方位面采用泰勒加权,实现了16×2天线阵列方位方向图实测旁瓣电平小于-18 dB的设计要求。实测VSWR<2的带宽大于12%,增益大于20.5 dB,满足设计要求。A cell form with parasitic patches introduced above the radiating patch is used to broaden the bandwidth of the microstrip antenna.Then,a different area strip line is used as the array antenna feeding form to realize a 16×2 antenna array.The feeding of the strip line can avoid the radiation from the feeder,affect the pattern of the array antenna,and reduce the loss of the feeder.By performing Taylor weighting on the antenna,the side lobe level of the antenna is less than-18 dB,and the measured side lobe level of the antenna is less than 18 dB.Due to the parasitic patch design,the bandwidth of the array antenna VSWR<2 is greater than 12%,and the measured gain is greater than 20.5dB.

关 键 词：微带阵列天线 宽带 悬置带线 

分 类 号：TN8[电子电信—信息与通信工程]