Characteristic Mode Analysis for Pattern Diversity and Beamforming:A Survey

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外文摘要：With the rapid development of space-air-ground integrated communications,diverse requirements have been imposed on antenna radiation patterns.In addition,increasingly compact platforms brings significant challenges to the deployment of antenna arrays normally used for beamforming.This article comprehensively surveys characteristic mode analysis(CMA)-based pattern diversity realizations in past years.Specifically,exciting multiple characteristic modes independently achieves pattern reconfigurability and element-reduced multiple-input and multiple-output sys-tems.We furthermore overview a series of works on modes superposition.Various methods have been explored for modal weights decision,and therefore specific patterns are synthesized.The weighted modal combination also fulfills single-element beamforming.A recent study on an antenna design for electrically small unmanned aerial vehicles(UAVs)is summarized,and the desired reconfigurable radiation patterns of the conformal radiator are realized based on CMA.Moreover,a formation-based beamforming technique,which takes advantages of the electromagnetic coup-ling among conformal radiators and the agility of UAVs,is introduced.

外文关键词：

BeamformingBeamsteeringCharacteristic mode analysisReconfigurable radiation pattern

作者：

Qianyun ZHANG、Biyi WU

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作者单位：

School of Cyber Science and Technology,Beihang University,Beijing 100191,China

Center for Electromagnetic Simulation,School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYoung Elite Scientists Sponsorship Program by CASTYoung Elite Scientists Sponsorship Program by CAST

项目编号：

61901020622710462021QNRC0012020QNRC001

出版年：

2024

DOI：

10.23919/cje.2022.00.255

电子学报(英文)

CSTPCDEI

ISSN：1022-4653

年,卷(期)：2024.33(5)