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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A corrugated G-shaped grounded ring slot antenna for wideband circular polarization
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A corrugated G-shaped grounded ring slot antenna for wideband circular polarization

机译：波纹G形接地环形槽缝天线，用于宽带圆极化

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摘要

In this paper, a wideband circularly polarized corrugated G-shaped grounded ring slot antenna is presented. The proposed antenna structure is excited using a coplanar waveguide-fed monopole antenna, which is placed inside a corrugated G-shaped grounded ring. Due to the asymmetry in the ground plane, two orthogonal modes, having equal magnitude and out of phase by 90 degrees are excited, resulting in circular polarization (CP). The generation of the CP in the proposed antenna structure is explained using thin dipole current element approximation. A prototype of the proposed antenna is fabricated and tested. The measured results exhibit a 3 dB axial ratio bandwidth of 37.6% (2.22-3.25 GHz), and reflection coefficient bandwidth (|S-11| <= -10 dB) of 47.91% (2.13-3.47 GHz). Additionally, the design guidelines are also presented for G-shaped grounded ring slot antennas.
机译：本文提出了一种宽带圆极化波纹状G形接地环形缝隙天线。所提出的天线结构是使用共面波导馈电单极天线激励的，该天线放置在波纹G形接地环内。由于接地平面中的不对称性，两个正交模式（大小相等且相位相差90度）被激发，从而导致圆极化（CP）。拟议的天线结构中的CP的生成是使用薄偶极子电流元素近似来解释的。拟议天线的原型已制造并测试。测量结果显示3dB轴向比率带宽为37.6％（2.22-3.25 GHz），反射系数带宽（| S-11 | <= -10 dB）为47.91％（2.13-3.47 GHz）。此外，还介绍了G形接地环形槽天线的设计指南。

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