【作者】 庞权珂； 程响； 林朝光； 宗显政；

【Author】 Quanke Pang;Xiang Cheng;Chaoguang Lin;Xianzheng Zong;University of Electronic Science and Technology of China;The Tenth Research Institute,China Aerospace Science and Technology Corporation;

【机构】 电子科技大学； 北京临近空间飞行器系统工程研究所；

【摘要】 本文设计了一种Ku波段超宽带双圆极化微带贴片天线,该天线通过堆叠寄生贴片有效增加了谐振点,明显拓宽阻抗匹配带宽,并通过一个小型化3 dB分支线定向耦合器对贴片馈电实现了双圆极化功能。仿真结果表明,天线的工作带宽能够完全覆盖Ku波段,阻抗匹配相对带宽为61.35%,3 dB轴比相对带宽达到53.5%,工作频带内法向增益始终高于3 dBi。该天线可应用于卫星通信领域的相控阵设计。更多还原

【Abstract】 This paper presents the design of a Ku-band ultra-wideband dual circularly polarized microstrip patch antenna.By incorporating stacked parasitic patches,this antenna effectively increases the number of resonance points,thereby significantly broadening the impedance bandwidth.Additionally,it employs a miniaturized 3 dB three-branch directional coupler for feeding,achieving dual circular polarization performance.Consequently,the antenna’s operating bandwidth fully covers the Ku band,with a relative impedance bandwidth of 61.35% and a relative 3 dB axial ratio bandwidth of 53.5%.Within the operating band,the normal gain consistently exceeds 3 dBi.These simulation results provide valuable reference significance for the design of satellite communication phased array antennas.更多还原