Analytical solutions for full-field radiations of magnetoelectric antennas with nonlinear magnetoelastic coupling
考虑非线性磁-弹耦合的磁电天线近/远场辐射解析解作者机构：Research Center for Applied MechanicsSchool of Mechano-Electronic EngineeringXidian UniversityXi'an 710071China China Telecom WanWei Information Technology Co.Ltd.Lanzhou 730010China
出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)
年 卷 期：2024年第40卷第7期
页 面：109-121页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：supported by the Natural Science Foundation of Shaanxi Province(Grant No.2024JC-YBMS-069) the Fundamental Research Funds for the Central Universities and the Innovation Fund of Xidian University(Grant Nos.ZYTS24026 and YJSJ24001)
主 题：ME antenna Full-field radiation Magneto-elastic coupling Radiation patterns
摘 要：This paper presents analytical solutions for full-field radiation in magnetoelectric(ME)antennas,considering a fully magnetoelastic coupled constitutive relation.A nonlinear converse ME coupling model is established,incorporating mechanical,electric,and magnetic variables with generalized Maxwell *** model emphasizes the essence of ME antennas,where radiation is achieved through strain/stress-mediated coupling between different *** magnetic flux density and electric displacement obtained from the model are used as sources to solve the full-field radiations of ME *** proposed model is validated through existing experiments and simulations,demonstrating that the radiation performance of ME antennas is strongly influenced by nonlinear magneto-elastic *** material parameters and magnetic bias significantly impact the magnetic flux density and far-field radiation due to the nonlinear magnetization *** study reveals the mechanisms behind enhanced working bandwidth and frequency tuning by examining the frequency response of the radiation impedance with material *** adjusting the initial magnetization rate,saturation magnetostriction,and saturation magnetization,the radiation efficiency/gain can be increased by 340%,108%,and 112%*** model enhances our understanding of the full-field radiation of ME antennas and provides a foundation for designing tunable ME antennas.
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