混合拓扑优化算法优化锥形波束天线

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• 英文论文题名：Conical-Beam Antenna Design by Topology Optimization
• 论文作者：王建 ; 杨雪松 ; 王秉中
• 英文论文作者：WANG Jian ; YANG Xue-Song ; WANG Bing-Zhong ; School of Physical Electronics ; University of Electronic and Science Technology of China
• 年：2017
• 作者机构：电子科技大学;
• 论文关键词：锥形波束天线 ; 拓扑优化 ; 材料分布法 ; 水平集法 ; 有限元
• 英文论文关键词：Conical-beam antenna ; Topology optimization ; material distribution method ; level set method ; finite element method
• 会议召开时间：2017-05-08
• 会议录名称：2017年全国微波毫米波会议论文集（中册）
• 英文会议录名称：Proceedings of 2017 National Conference on Microwave and Millimeter Waves(NCMMW2017)
• 语种：中文
• 分类号：TN823.15
• 学会代码：ZDWB
• 会议名称：2017年全国微波毫米波会议
• 会议地点：中国浙江杭州
• 主办单位：中国电子学会
• 学会名称：中国电子学会微波分会
• 页数：4
• 文件大小：1130k
• 原文格式：D
• 会议级别：全国

摘要

本文将材料分布法和水平集法两种拓扑优化方法相结合,基于有限元仿真算法和天线目标函数的敏感度分析,进行了圆极化锥形波束天线的优化。将待优化天线的初始结构设为N等分旋转对称结构,并利用结构对称性将仿真模型和优化变量减少为原来的1/N。利用混合拓扑优化算法,通过230次迭代达到预期目标。对天线进行了加工和测试,在优化频率5.8 GHz,测试的S_(11)为-20 d B,增益为7.8 d Bi,最大波束指向俯仰角30o方向,且在俯仰角10o-50o范围内轴比低于3 d B,仿真和测试数据吻合良好。
Two topology optimization methods, namely the material distribution and the level set methods, are used together to optimize a conical-beam antenna by applying finite element method and sensitivity analysis. The antenna is designed to have a rotationally symmetric structure. By applying this symmetry feature, the simulation model and the optimization variables can be reduced considerably. By using the above method, optimization objective is achieved after 230 iterations. The measured data show that the antenna has a beam-pointing angle of 30°, gain 7.8 d Bi, S_(11)-20 d B, 3-d B axial ratio beamwidth is 10°-50°in the elevation plane at prescribed frequency 5.8GHz. The measurement and simulation data match well.

引文

[1]W.Lin,H.Wong,"Circularly Polarized Conical-Beam Antenna With Wide Bandwidth and Low Profile,"in IEEE Trans.on Antennas and Propag.,Dec.2014,vol.62,no.12,pp.5974-5982.
    [2]E.Hassan,E.Wadbro,M.Berggren,“Topology Optimization of Metallic Antennas,”IEEE Trans.Antennas Propag.,vol.62,no.5,pp.2488-2500,May 2014.
    [3]S.W.Zhou,W.Li,Q.Li,“Level-set based topology optimization for electromagnetic dipole antenna design,”Journal of Comput.Physics,vol.229,no.19,pp.6915-6930,2010.
    [4]J.M.Jin,The Finite Element Method in Electromagnetics,3rd ed.,New Jersey:Wiley-IEEE Press,Hoboken,2014.
    [5]J.Wang,X.S.Yang,“A Hybrid Topology Optimization Method Based on Sensitivity Analysis,”in 2016 IEEE MTT-S Int.Microw.Symp.(IMS),San Francisco,CA,May2016
    [6]H.Igarashi,K.Watanabe,“Complex adjoint variable method for finite-element analysis of eddy current problems”.IEEE Trans.Magn.,vol.46,no.8,pp.2739-2742,Aug.2010.
    [7]H.Akel,J.P.Webb,“Design sensitivities for scattering-matrix calculation with tetrahedral edge elements,”IEEE Trans.Magn.,vol.36,no.4,pp.1043-1046,July.2000.
    [8]K.Svanberg,“A class of globally convergent optimization methods based on conservative convex separable approximations,”SIAM journal optim.,vol.12,no.2,pp.555-573,2002.