中文摘要：

该文采用双层方形贴片开对角槽的结构设计了一种新型的应用于X波段的圆极化微带贴片天线。通过仿真优化,天线轴比〈3dB的带宽480 MHz,增益达到6.29dB,反射系数s11〈-10dB的相对阻抗带宽达到6.6%,天线具有良好的圆极化和阻抗匹配特性。

英文摘要：

In this paper,a novel circularly polarized microstrip patch antenna with the structure of two-layer square patch notched diagonal grooves at X-band was designed.Through simulation optimization,the bandwidth of antenna within which the axial ratio less than 3dB reaches 480 MHz,the antenna gain is about 6.29 dB,the relative impedance bandwidth（s11-10dB）reaches 6.6%,and the antenna has good circular polarization and impedance matching characteristics.