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首页> 外文会议>2017 IEEE International Conference on Antenna Innovations amp; Modern Technologies for Ground, Aircraft and Satellite Applications >Improvement in circularly polarized square patch design by double-layered ground structure
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Improvement in circularly polarized square patch design by double-layered ground structure

机译：双层接地结构改善圆极化方形贴片设计

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摘要

Radiation performance of a circularly polarized (CP) truncated corner square patch on a conventional ground plane (GP) has been enhanced by using a simple and novel configuration of stacked dual GP. The proposed configuration employs a single fed truncated corner square patch etched onto a substrate grounded with a patch shaped small GP and having second square shaped GP of standard size separated from the first one with an air gap at an optimized distance. This configuration is ideal for many wireless and satellite communication applications. Simulated results indicate the best achievable axial ratio (AR) of about 0.4 dB for a stacked dual GP CP antenna compared to an AR of 2.7 dB for a conventional single GP CP antenna, indicating an improvement in cross polarized (XP) isolation of about 18 dB. AR bandwidth has also been improved by almost 100% with the stacked dual GP configuration when compared with conventional CP antenna. Improved radiation performance has been achieved without affecting impedance bandwidth and peak gain of the patch. Analysis based on GP size variation of the conventional CP antenna and stacked dual GP antenna reveals that stacked dual GP configuration results in compact CP antenna with good radiation performance.
机译：通过使用堆叠双GP的简单新颖的配置，圆极化（CP）截短的方形角块在常规接地平面（GP）上的辐射性能得到了增强。所提出的配置采用单进料的截角四角方形补丁，该补丁被蚀刻到以补丁形状的小GP接地并具有标准尺寸的第二正方形GP与第二大小的GP隔离的基板上，该第二大小的GP具有与第一块GP隔离的最佳间距。此配置是许多无线和卫星通信应用的理想选择。仿真结果表明，与传统的单GP CP天线的2.7 dB的AR相比，堆叠的双GP CP天线的最佳可实现的轴向比（AR）约为0.4 dB，表明交叉极化（XP）隔离度提高了约18 D b。与传统的CP天线相比，采用堆叠双GP配置的AR带宽也提高了近100％。在不影响阻抗带宽和贴片峰值增益的情况下，已经实现了改进的辐射性能。基于常规CP天线和堆叠式双GP天线的GP尺寸变化的分析表明，堆叠式双GP结构导致紧凑的CP天线具有良好的辐射性能。

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