基于基片集成波导的Ka波段毫米波缝隙天线设计  

Design of Ka-band Millimeter-wave Slot Antenna Based on Substrate-integrated Waveguide

作　　者：崔露露 李静[1] 伍悍东 白彦平 郑祥功 CUI Lulu;LI Jing;WU Handong;BAI Yanping;ZHENG Xianggong(School of Armament Science and Technology,Xi′an Technological University,Xi′an 710012,China;Xi′an Hengda Microwave Technology Development Co.,Ltd,Xi′an 710100,China)

机构地区：[1]西安工业大学兵器科学与技术学院,西安710012 [2]西安恒达微波技术开发有限公司,西安710100

出　　处：《微波学报》2024年第3期12-16,共5页Journal of Microwaves

基　　金：西安市科技计划项目(2019220514SYS020CG042)。

摘　　要：本文总结了由基片集成波导(SIW)设计缝隙天线的一般方法,并设计了一款8×8 SIW缝隙天线阵列。该天线主要由SIW馈电网络、缝隙阵列和微带线至SIW转换器三部分构成。利用泰勒分布函数控制阵列的馈电幅度以及缝隙的偏置距离,从而有效地控制了阵列在方位面和俯仰面的旁瓣电平。实验结果表明,该天线在33.30 GHz~36.54 GHz的频带范围内S 11幅值小于-10 dB,相对带宽为9.3%。天线最大增益为18.56 dB,H面副瓣电平小于-20 dB,E面副瓣电平小于-18 dB。该天线剖面低,易于共形,在机载、弹载等场景中有较好的应用前景。The general method of slot antenna designed by substrate integrated waveguide(SIW)is summarized and an 8×8 SIW slot antenna array is designed in this paper.The antenna is mainly composed of three parts:SIW feed network,slot array antenna and microstrip line to SIW converter.The feeding amplitude of the array and the offset distance of the slot are controlled by Taylor distribution function,so that the sidelobe levels of the array in the azimuth and elevation planes are effectively controlled.The experimental results show that the amplitude of S 11 of the antenna is less than-10 dB in the frequency range of 33.30 GHz~36.54 GHz,and the relative bandwidth is 9.3%.The maximum gain of the antenna is 18.56 dB,the sidelobe level of the H plane is less than-20 dB,and the sidelobe level of the E plane is less than-18 dB.The antenna has a low profile and is easy to conform,so it has a good application prospect in airborne,missile-borne and other scenarios.

关 键 词：基片集成波导 泰勒分布 缝隙阵列天线 

分 类 号：TN822.4[电子电信—信息与通信工程]