高阶模高增益贴片天线的分析与设计综述

1)深圳大学电子与信息工程学院,广东省移动终端微波毫米波工程技术研究中心,ATR国防科技重点实验室,广东深圳 518060; 2)澳门大学科技学院,澳门 999078

天线电波传播; 高阶模; 高增益贴片天线; 副瓣抑制; 阻抗带宽; 双频贴片天线; 宽带贴片天线

A review on analysis and design of high-gain patch antenna under high-order-mode operation
HONG Kaidong1, ZHANG Xiao1, ZHU Lei2, CHEN Zhe1, and YUAN Tao1

1)College of Electronics and Information Engineering, Guangdong Provincial Mobile Terminal Microwave and Millimeter-Wave Antenna Engineering Research Center, ATR National Key Laboratory of Defense Technology, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China2)Faculty of Science and Technology, University of Macau, Macau 999078, P.R.China

antenna and propagation; high-order-mode; high-gain patch antenna; sidelobe suppression; impedance bandwidth; dual-band patch antenna; wideband patch antenna

DOI: 10.3724/SP.J.1249.2021.01069

备注

与基模贴片天线相比,高阶模贴片天线天然具有更大的电尺寸,故有利于实现高增益辐射.然而,高阶模贴片天线也存在副瓣高和带宽窄等缺陷.本文分析了采用高介电常数基板、寄生辐射抵消和缝隙加载3种主要的抑制高阶模贴片天线副瓣方法; 针对高阶模贴片天线的阻抗带宽特性,评述近年来国内外关于双频和宽带高阶模贴片天线的主要研究成果; 介绍多模谐振技术及滤波天线设计方法对改善高阶模贴片天线带宽的作用,指出未来高阶模贴片天线设计仍然面临阻抗带宽窄和天线邻模抑制问题.

Compared with the fundamental-mode patch antennas, high-order-mode patch antennas inherently possess much larger radiating size, so they are good candidates for high-gain radiation. However, these antennas usually suffer from several drawbacks, such as high sidelobe level, narrow bandwidth and so on. This paper analyzes three reported techniques for sidelobe suppression of the high-order-mode patch antennas, such as high dielectric constant substrate, filed superposition from parasitic patch, and slot loading on patch. As for bandwidth enhancement, dual-band and wideband high-order-mode patch antennas proposed in recent years are reviewed in detail, and it is demonstrated that the multi-mode technique and filtering antenna theory are effective for wideband design. Finally, the design challenges for future high-order-mode patch antennas in terms of narrow impedance bandwidth and antenna adjacent mode suppression are discussed.

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