共面馈电凹口矩形贴片天线间互耦.pdfVIP

电子发烧友 电子技术论坛 共面馈电凹口矩形贴片天线间的互耦 ①,② ① 柴雯雯 ,张晓娟 (①.中国科学院电子学研究所高功率微波与电磁辐射重点实验室，北京 100080； ②.中科院研究生院，北京 100039） 摘要：本文分析了共面馈电的凹口矩形微带贴片天线间的互耦模型，具体研究了天线介质包 括厚度以及介电常数、不同阵元间距、不同的阵元放置方式、不同谐振长度的天线组合对于 互耦的影响，确定了减小阵元间互耦的方法。互耦研究有利于大的阵面设计，并可以应用到 空间多样性，极化多样性以及方向图多样性的天线阵设计中。 关键词：互耦；天线阵；共面馈电；凹口矩形贴片 Mutual coupling in the notched rectangular patch antennas array fed by coplanar microstrip line ①,② ① Chai Wen-wen , Zhang Xiao-juan (①. The key laboratory of high power microwave and electromagnetic radiation, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China ; ②. Graduate School of Chinese Academy of Sciences, Beijing 100039, China) Abstract: In this paper, the models of mutual coupling in the notched rectangular patch antenna array are analyzed. The effects on the mutual coupling in antenna array, including the dielectric, the distance between antenna elements, the orientation and resonant lengths of antenna elements, are respectively studied. The methods to reduce the mutual coupling are determined. The experimental results can help to design the large antenna array and also can be applied to the diversity antenna systems. Key words: mutual coupling; antenna array; coplanar feeding; notched rectangular patch; 1 引言 在现代移动通信领域中，随着通信业的发展，移动体上装载的通信设备越来越多．因此， 减小通信设备所占空间、提高通信设备的性能便成为人们所追求的目标．微带天线在移动通 信领域具有很好的应用前景[1][2]，具有成本低、姿态矮、重量轻、便于安装等优点。在实际 应用中，往往要求天线具有高增益、方向性强及定向辐射等特点，单个微带天线辐射元的增 益及方向性均很难达到要求，而天线阵则可获得上述