An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in target detection and tracking

作     者：Mianfeng HUANG Juhua LIU Mianfeng HUANG;Juhua LIU

作者机构：School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and SystemsSun Yat-sen UniversityGuangzhou 510006Chin 

出 版 物：《Frontiers of Information Technology & Electronic Engineering》 (信息与电子工程前沿（英文版）)

年 卷 期：2023年第24卷第4期

页      面：567-581页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：Project supported in part by the National Natural Science Foundation of China(No.62171480) in part by the Guangdong Basic and Applied Basic Research Foundation,China(No.2020B1515020053) 

主　　题：Antenna Leaky-wave antenna(LWA) Substrate-integrated waveguide(SIW) Sum and difference beam Target detection and tracking 

摘      要：An array of two substrate-integrated waveguide(SIW) periodic leaky-wave antennas(LWAs) with sum and difference beam scanning is proposed for application in target detection and tracking. The array is composed of two periodic LWAs with different periods, in which each LWA generates a narrow beam through the n=-1 space harmonic. Due to the two different periods for the two LWAs, two beams with two different directions can be realized, which can be combined into a sum beam when the array is fed in phase or into a difference beam when the array is fed 180?out of phase. The array integrated with 180?hybrid is designed, fabricated, and *** results show that the sum beam can reach a gain up to 15.9 dBi and scan from-33.4?to 20.8?. In the scanning range, the direction of the null in the difference beam is consistent with the direction of the sum beam,with the lowest null depth of-40.8 dB. With the excellent performance, the antenna provides an alternative solution with low complexity and low cost for target detection and tracking.