摘要
基于数值仿真和实验测量,研究了接地板尺寸对微带贴片天线圆极化等幅条件的影响规律。结果表明:当接地板尺寸变化时,铅垂极化分量幅度(|E_(θ)|)和水平极化分量幅度(|E_(φ)|)受到地板尺寸变化的敏感度和规律不同,从而影响了圆极化天线主波束范围内保持其幅值相等的条件。最终推得接地板尺寸在0.6~1.0波长范围内,铅垂、水平极化分量保持等幅条件(按幅度差不大于3dB计)的“等化波束宽度”经验公式,为可穿戴圆极化贴片天线的波束宽度调控及选择提供理论依据。
This paper studies the effect of the finite ground plane sizes on the eqi-amplitude bandwidth of circular polarized microstrip patch antennas through numerical simulations and experimental measurements.The results indicate that as the ground plane size changes,the changing sensitivities and trends of the vertical polarized component amplitude(|Eθ|)and the horizontal polarized component amplitude(|Eφ|)are different.This influences the condition of maintaining equal amplitudes in the main beam range of circularly polarized antennas This yields an empirical equation for the“equiamplitude beamwidth”,i.e.,the vertical polarized beamwidth and the horizontal polarized beamwidth must retain a nearly equal amplitude with a difference less than 3 dB when the ground plane size varies within 0.6 to 1.0-wavelength.This conclusion provides a theoretical basis for beamwidth selection and adjustment of wearable circularly polarized patch antennas.
作者
齐家琛
马柯
罗羽成
李小慧
吕文俊
QI Jiachen;MA Ke;LUO Yucheng;LI Xiaohui;LÜWenjun(College of Geographic and Biologic Information,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Jiangsu Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;College of Materials Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)
出处
《南京邮电大学学报（自然科学版）》
北大核心
2024年第1期37-43,共7页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
江苏省高校自然科学基金(19KJB310010)资助项目。
关键词
有限大接地板
圆极化贴片天线
等化波束宽度
可穿戴天线
finite ground plane
circularly polarized patch antenna
equi-amplitude beamwidth
wearable antenna
