高匹配高功率低副瓣波导缝隙阵天线的设计与数值模拟  

Design and numerical simulation of high-matching,high-power,low-sidelobeslotted waveguide array antenna

作　　者：侯万杉 殷勇[1] 秦雨 刘海霞 李文龙[1] 毕亮杰 李海龙[1] 王彬[1] 蒙林[1] Hou Wanshan;Yin Yong;Qin Yu;Liu Haixia;Li Wenlong;Bi Liangjie;Li Hailong;Wang Bin;Meng Lin(School of Electronic Science and Engineering,University of Electronic Science andTechnology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学电子科学与工程学院,成都611731

出　　处：《强激光与粒子束》2025年第4期1-9,共9页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(62271113);国家重点研发计划项目(2019YFA0210202);中央大学基础研究基金项目(ZYGX2019Z006);四川省自然科学基金项目(2022NSFSC1848,2023NSFSC1376)。

摘　　要：研究了波导缝隙阵天线在高功率微波技术中的应用,提出了一种新的设计方法,特别关注了波导缝隙阵天线的缝隙互耦、副瓣电平以及天线和馈源的匹配问题。新方法利用现代计算机技术快速计算出考虑缝隙互耦效应的缝隙电导函数,从而实现波导缝隙阵天线的高效设计,该方法无需复杂运算或外部结构,保证了系统紧凑性,并在设计波导缝隙面阵时表现出更高的有效性。仿真结果表明:新方法设计的天线在匹配度方面表现优异,在中心频率f=2.458 GHz处,所设计的天线的各个端口的反射系数范围为-37.2 dB至-27.7 dB,相比使用Stevenson公式设计相同目标参数的天线的各个端口的反射系数范围为-11 dB至-8.7 dB,使用新方法设计的天线的各个端口的反射系数至少降低了19 dB。此外,新方法设计的天线实现了-30.2 dB的低副瓣电平和332.6 MW的高功率容量。This paper investigates the application of waveguide slot array antennas in high-power microwave technology and proposes a novel design method,with particular emphasis on the slot coupling,sidelobe levels,and matching between the antenna and the feed.The new method leverages modern computing technology to rapidly compute the slot conductance function considering slot coupling effects,thereby enabling efficient design of waveguide slot array antennas.This method avoids complex calculations or external structures,ensuring system compactness and demonstrating high effectiveness in designing waveguide slot planar arrays.Simulation results indicate that antennas designed using the new method exhibit excellent matching performance.At the center frequency f=2.458 GHz,the reflection coefficient for each port of antenna designed using the new method ranges from-37.2 dB to-27.7 dB.Compared with the range from-11 dB to-8.7 dB of antennas designed using the Stevenson formula for the same target parameters,the reflection coefficient of antennas designed with the new method is reduced by at least19 dB.Moreover,the antennas designed with this new method achieve a low sidelobe level of-30.2 dB and a high power capacity of 332.6 MW.

关 键 词：互耦 匹配 副瓣电平 功率容量 高功率微波 

分 类 号：TN123[电子电信—物理电子学]