ABSTRACT A circularly polarized monopole antenna fed by coplanar waveguide is presented in this research. The antenna operates in wireless local area network and worldwide interoperability for microwave access bands. Circular polarization (CP) is achieved by using inverted L-shaped strips on both sides of a simple monopole and introducing asymmetries in the ground plane. The measured impedance bandwidth from 1.77 to 5.35 GHz while axial ratio bandwidth from 2.04 to 3.85 GHz are achieved. The proposed antenna has a gain of 0.6–2.8 dBi within the circular polarization band.

中文翻译：

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用于无线 WLAN/LTE 应用的共面波导馈送圆极化天线

摘要 本研究提出了一种由共面波导馈电的圆极化单极天线。该天线在无线局域网和微波接入频段的全球互操作性中运行。圆极化 (CP) 是通过在简单单极子的两侧使用倒 L 形条并在接地平面中引入不对称性来实现的。测得的阻抗带宽为 1.77 至 5.35 GHz，轴比带宽为 2.04 至 3.85 GHz。建议的天线在圆极化频带内具有 0.6-2.8 dBi 的增益。