A Microstrip Leaky-Wave Antenna with Scanning Beams Horizontal to the Antenna Plane  

作　　者：Henghui WANG Peiyao CHEN Sheng SUN 

机构地区：[1]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Chinese Journal of Electronics》2024年第5期1218-1223,共6页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61971115 and 61721001);the Sichuan Science and Technology Program(Grant No.2023NSFSC0486).

摘　　要：A leaky-wave antenna with horizontal scanning beams and broadside radiation is presented on the periodically modulated microstrip.The horizontal radiation is realized by periodically etching a set of resonant open-ended slots on the ground plane.Dispersion diagrams and Bloch impedance are first analyzed to investigate the propagation and radiation characteristics of the periodic structure.Subsequently,shunt matching stubs are installed aiming to obtain seamless beam scanning property through the broadside.Finally,a prototype is implemented as verification of the presented antenna.Results of the simulations and measurements agree well with each other,indicating the elimination of the open-stop band effect and the horizontal radiation beams.The fabricated antenna exhibits a beam range from−62°to+34°,and provides a maximum measured gain about 14.6 dBi at 10 GHz.

关 键 词：Bloch impedance Horizontal radiation Leaky-wave antenna Microstrip line Seamless beam scanning. 

分 类 号：TN822.6[电子电信—信息与通信工程]