摘要
该文设计了一种新型宽带圆极化微带天线。该天线采用微带线进行馈电,在地板圆形开槽内加载一对矩形和椭圆组成的径向微扰枝节来获得圆极化,并切去一对圆弧形槽以降低圆极化的中心频率。借助仿真软件HFSS对天线结构参数进行优化设计,并制作实物。仿真与测试结果表明:回波损耗小于-10dB的阻抗带宽为12.5%,且在此频段内轴比均小于2dB。
A new wideband circularly polarized microstrip antenna fed by microstrip line is designed in this paper. The proposed antenna realizes circularly polarized by loading a pair of radial perturbation structures at the circular-slot boundary on the ground, and the perturbation structures were composed of rectangle and ellipse. It also cuts off a pair of circular grooves to reduce the center frequency of the circular polarization. The parameters of the antenna are optimized by the simulated software HFSS, and an antenna is fabricated based on the simulation. The simulation and measured results show that the impedance bandwidth with S11 〈 - 10 dB is 12.5%, and the axial ratio is less than 2dB in the band.
出处
《杭州电子科技大学学报（自然科学版）》
2013年第5期62-65,共4页
Journal of Hangzhou Dianzi University：Natural Sciences
关键词
微带天线
圆极化
宽带
microstrip antenna
circular polarization
wideband
