【作者】 李晋琳； 张福顺； 王茂泽； 焦学强； 孙健；

【Author】 LI Jinlin;ZHANG Fushun;WANG Maoze;JIAO Xueqiang;SUN Jian;National Key Laboratory of Antennas and Microwave Technology,Xidian University;

【机构】 西安电子科技大学天线与微波技术重点实验室；

【摘要】 本文研究X波段宽频带圆极化高增益阵列天线。采用阵列天线排阵方法实现高增益,利用正交"H"形耦合缝隙和多节阻抗变换完成宽带馈电网络,运用了宽带移相器实现宽带圆极化。通过标准仿真软件HFSS对天线进行了仿真设计,设计结果表明,天线增益大于15dB,天线阻抗相对带宽达到了40%(驻波比小于2);圆极化轴比在工作频带内小于3dB;在仿真设计的基础上,研制了天线工程样机,样机测试结果与设计结果吻合良好,说明了设计方法的有效性。更多还原

【Abstract】 A wideband circularly polarized and high gain array antennas on X-band is proposed in this paper.Array is formed to realize the high gain.By feeding the antenna element with two orthogonally placed H-shaped apertures and designing the wideband feeding network with the multisection impedance transformation technology,the proposed antenna array has a broad impedance matching.Broadband phase shifter is introduced into the feeding network,the proposed array has a circular polarization with broad bandwidth.The software Ansoft HFSS is used to simulate and design the presented array.The experimental results show the array has a stable co-polarization gain greater than 15 dB,broad bandwidth of 40% for VSWR less than 2 and axial ratio(AR) less than 3 dB over the operating frequency band.The proposed array is fabricated and measured based on the simulated design,the measured results achieve a good agreement with the simulated ones,which proves the availability of the design process.更多还原