基于散射矩阵的低带内散射天线设计方法  

Design Method of Low In-Band Scattering Antenna Based on Scattering Matrix

作　　者：汪承慧 朱杨[1,2] 王放 WANG Cheng-hui;ZHU Yang;WANG Fang(The 38th Research Institute of China Electronics Technology Group Corporation,Hefei 230088,China;Anhui Province Engineering Laboratory for Antennas and Microwave,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088 [2]安徽省天线与微波工程实验室,安徽合肥230088

出　　处：《山东工业技术》2023年第1期95-99,共5页Journal of Shandong Industrial Technology

摘　　要：隐身平台要求平台集成天线本身具有低散射,而天线带内散射缩减容易破坏天线辐射性能。本文给出一种基于散射矩阵和阻抗加载的低带内散射天线设计方法。与传统方法不同的是,该方法将天线散射性能并入天线端口散射矩阵,且天线端口散射矩阵包含寄生贴片端口参数,从而可以通过改变寄生贴片端口加载阻抗值调控天线散射性能。基于该方法设计了一种低带内散射U形槽微带天线,实现了在天线辐射性能基本不受影响的情况下在7.3~9.4GHz频带内散射截面积缩减4.3~13.1dB。Stealth platforms require low scattering antennas.However,the reduction of in-band scattering of antennas can easily destroy the antennas’radiation performance.In this paper,a low in-band scattering antenna design method based on scattering matrix and impedance loading is proposed.Different from the traditional way,the scattering characteristic of an antenna is incorporated into the scattering matrix,which contains the scattering parameters of the ports in parasitic patches.Then the scattering performance of the antenna can be controlled by altering the impedance-loading values of the ports in parasitic patches.A U-slot microstrip antenna with low in-band scattering is designed based on the proposed method.Without changing the antenna’s radiation performance,the scattering cross section of the antenna is reduced by 4.3~13.1dB in the frequency band of 7.3~9.4GHz.

关 键 词：天线 带内散射 散射矩阵 阻抗加载 

分 类 号：TN82[电子电信—信息与通信工程]