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本文采用变异hour glass形状缝隙耦合馈电,并引入背腔结构,设计了一种适用于L波段,具有良好波束前后比特性的宽带缝隙耦合微带天线,并讨论了馈电网络参数和背腔结构对天线性能的影响。设计结果表明:该天线驻波相对带宽≥50%,频带内辐射前后比均≥12dB。
In this paper, a novel microstrip patch antenna coupled with variable hour glass shape gap was introduced and a back cavity structure was introduced. A wideband slot coupling microstrip antenna with L-band and excellent beam front-to-back characteristics was designed. The parameters of feed network and back cavity Effect of structure on antenna performance. The design results show that the relative bandwidth of the antenna is ≥50% and the average ratio of the antenna before and after radiation is ≥12dB.