一种毫米波宽角扫描Vivaldi天线设计  

A Millimeter-wave Wide-angle Scanning Vivalid Antenna

作　　者：孟永勇 胡明春[1,2] 张金平[1,2] MENG Yongyong;HU Mingchun;ZHANG Jinping(Nanjing Research Institute of Electronics Technology, Nanjing 210039 , China;Science and Technology on Antenna and Microwave Laboratory , Nanjing 210039 , China)

机构地区：[1]南京电子技术研究所,南京210039 [2]天线与微波技术国防科技重点实验室,南京210039

出　　处：《现代雷达》2019年第4期63-66,共4页Modern Radar

摘　　要：设计了一种工作于毫米波段的金属Vivaldi天线,天线宽带扫描性能优异。天线结构利用Vivaldi作为辐射单元,将其集成到带状线耦合的馈电基板上,馈电网络与辐射天线结构相对独立,便于加工。通过仿真得到:在27.2 GHz～46.0 GHz范围内VSWR<2;在27.5 GHz～42.2 GHz频段内,天线驻波比在E面和H面45°扫描范围内满足小于2的匹配特性。文中利用设置周期性边界条件的方法优化天线尺寸并仿真分析天线参数对扫描带宽的影响。通过驻波比、交叉极化、天线增益的仿真分析天线性能。A kind of metal Vivaldi broadband antenna is designed to work in the millimeter. the broadband scanning performance of the antenna is excellent.The antenna structure utilizes Vivaldi as a radiating element and is integrated it into a stripline coupled feed substrate. The feed network and the radiating structure are relatively independent and the structure is easy to process. Simulation shows: VSWR is less than 2 in the range of 27.2 GHz^46.0 GHz;In the frequency band of 27.5 GHz^42.2 GHz, the antenna VSWR is less than 2 within the 45° scanning range of the E and H planes. In this paper, the method of setting periodic boundary conditions is used to optimize the antenna size and simulate the influence of antenna parameters on the scanning bandwidth. Antenna performance is analyzed by simulation of standing wave ratio, cross polarization, and antenna gain.

关 键 词：毫米波 VIVALDI天线 阵列扫描 

分 类 号：TN82[电子电信—信息与通信工程]