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文章设计了一种用于实现S波段双频圆极化的平面单极天线。该天线通过在圆环形单极子贴片上加载四个相互之间夹角90°的支节,分别实现了在2.4 GHz~2.52 GHz和3.28 GHz~3.39 GHz两个频段的圆极化辐射,通过阶梯形激励条带的设计,改善了阻抗带宽。借助于仿真软件对天线参数进行优化,并在此基础上制作了实物。测试结果表明,该设计达到了仿真的效果。该天线结构简单,加工方便,制作成本低,具有实际的应用价值。
The paper designs a planar monopole antenna used to realize S-band dual-frequency circular polarization. The antenna achieves the circularly polarized radiation in the two frequency bands of 2.4 GHz ~ 2.52 GHz and 3.28 GHz ~ 3.39 GHz by loading four quadrilateral included angles of 90 ° on a circular monopole patch , Through the design of the ladder-shaped excitation band, improve the impedance bandwidth. With the aid of simulation software, the antenna parameters are optimized, and based on this, the physical objects are produced. The test results show that the design achieves the effect of simulation. The antenna has the advantages of simple structure, convenient processing, low production cost and practical application value.