长安大学信息工程学院;
为满足无线通信系统对天线宽圆极化带宽的需求，提出了一款新型单馈宽频带圆极化矩形介质谐振器(Dielectric Resonator, DR)天线(Dielectric Resonator Antenna, DRA)。天线的主辐射体为一矩形介质谐振器，初始设计工作于主模，DR由微带线通过非对称交叉缝隙耦合馈电。为拓宽DRA的3 dB轴比带宽，利用枝节加载使其结构类似于十字交叉型，并在中央矩形DR两对角线上分别对称创建2个尺寸一致的矩形空腔从而获得更宽的3 dB轴比带宽。仿真结果表明，其-10 dB阻抗带宽达到49.6%(2.46 GHz, 1.85～3.07 GHz),3 dB轴比带宽达到32.5%(2.56 GHz, 2.14～2.97 GHz),最大左旋圆极化增益约为6.2 dBic。所设计天线适用于卫星通信、全球卫星定位等无线通信应用场景。
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基本信息:
DOI：
中图分类号:TN820
引用信息:
[1]靳钊,余景东.枝节加载宽带圆极化介质谐振器天线设计[J].无线电工程,2023,53(08):1779-1784.
基金信息:
陕西省工业攻关计划(2018GY-019)~~