面向无线局域网的双频圆极化印刷天线研究

Research on dual frequency circular polarization printed antenna for wireless local area network

为了满足无线通信的性能需求,文章设计了一种双频圆极化印刷天线。结果表明,该天线的阻抗特性和轴比特性表现良好,天线10-dB回波损耗带宽为113%(1.95~6.5 GHz),在两个频段上的3-dB轴比带宽分别为51.2%(2.19~3.47 GHz),22.4%(4.88~6.18 GHz);可完全覆盖所有无线局域网应用频段。此外,该天线在两个圆极化波段内具有稳定的天线增益和良好的辐射方向图。

In order to meet the performance requirements of wireless communication,a dual-frequency circular polarization printing antenna is designed.The results show that the impedance and axial ratio characteristics of the antenna are good,the antenna 10-dB return loss bandwidth is 113%(1.95~6.5 GHz),and the 3-dB axis specific bandwidth is 51.2%(2.19~3.47 GHz)and 22.4%(4.88~6.18 GHz)in the two frequency bands.In addition,the antenna has stable antenna gain and good radiation pattern in two circularly polarized bands.