一种新型宽带低副瓣微带贴片阵列天线的设计  

Novel Design of A Broadband Low-Sidelobe Microstrip Patch Array Antenna

作　　者：王德乐 黄季甫 WANG De-le;HUANG Ji-fu(Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China)

机构地区：[1]宁波大学信息科学与工程学院,宁波315211

出　　处：《无线通信技术》2018年第1期39-42,共4页Wireless Communication Technology

基　　金：国家自然科学基金重点项目(61631012)

摘　　要：本文介绍了一种新型宽带低副瓣微带贴片阵列天线的设计。该设计采用背馈式长探针馈电,使微带馈线和辐射贴片有效隔离,减小了寄生辐射;采用双层辐射贴片结构,使天线产生双谐振频点,有效地增大了天线的工作带宽;利用45°极化旋转,有效地降低了阵列天线的副瓣电平。设计并仿真了4*4单元天线阵列,结果表明,该天线在20%的频段内S_(11)参数优于-10dB、副瓣电平优于-26.5dB、辐射效率高于60%。Novel design of a broadband low-sidelobe microstrip array antenna is proposed. The antenna is fed by using long metal probe can effectively increase the isolation both the feed microstrip and the radiation patch,decreasing spurious radiation. The antenna can produce double resonance point by using the structure of double patch,which can effectively increase the working band. This antenna adopt 45°polarization rotation,which can effectively decrease the first sidelobe. Design and simulation a 4＊ 4 elements. The designed results show that the S（11） of array antenna is less than -10 dB,sidelobe better than-26. 5 dB in the required operational band,radiation efficiency better than 60%.

关 键 词：长探针馈电 双层贴片 45°极化旋转 宽频带 低副瓣 

分 类 号：TN82[电子电信—信息与通信工程]