【摘要】 设计了一种三频圆极化层叠微带贴片天线,该天线能够形成L频段、L2频段和S频段的双圆极化信号。层叠微带结构实现了天线的紧凑性,特殊的双馈电结构保证了圆极化性能,外加的金属圆台底座增大了低仰角增益。实测结果表明,三个频带内驻波比小于1.5,低仰角20°轴比小于7dB,圆极化性能良好。更多还原

【Abstract】 A novel triple-band circularly polarized stacked microstrip antenna is presented.The proposed antenna can form circular polarization signals at L band,L2 band and S band.The stacked structure carries out compactness of the antenna and the special dual-feed structure guarantees good circular polarization performance.What’s more,the pextra cone-pedestal greatly enhances the antenna’s gain at low elevation angle.Test results indicate that in every appointed band the VSWR is less than 1.5,and the Axis Ratin is less than 7dB at 20° of low elevation angle.And the performance of circular polarization is good.更多还原