一种悬架式双频微带天线的设计

Design of a Dual-band Suspended Microstrip Patch Antenna

为满足某一特定卫星通讯系统的应用需求,提出一种带抛物面基座的悬架式双频层叠微带天线结构模型。层叠微带结构确保天线的紧凑性,外加的抛物面基座改善双频天线的低仰角性能。利用商用软件HFSS,分析双频天线的主要参数并给出结论。仿真与实测结果表明,所提出的天线结构不仅具有良好的双频圆极化性能,而且有较高的低仰角增益。

In order to meet the requirements of a given mobile satellite communication system,a novel dual-band suspended microstrip patch antenna configuration with parabolic pedestal is proposed in this paper.The stacked microstrip antenna structure is used to ensure the compaction,and the suspended structure is used to improve the performance of low elevation of microstrip patch antenna.The key parameters of the proposed antenna are analyzed.Both simulation and test results demonstrate that the proposed antenna not only works well at dual-band with circular polarization(CP),but also obtains higher gain at low elevation angle.