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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A low-profile triple-band circularly polarized wide slot antenna for wireless systems
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A low-profile triple-band circularly polarized wide slot antenna for wireless systems

机译：用于无线系统的薄型三频圆极化宽缝隙天线

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摘要

A simple design for triple-band circularly polarized (CP) wide slot antennas is proposed and experimentally investigated. The proposed antenna having a microstrip-fed rectangular patch with T-shaped notch for triple-band operation and a modified wide square slot on ground plane for CP operation. The measured 10 dB reflection bandwidths are 1.24% (approximate to 340 MHz from 2.56 to 2.9 GHz), 9.63% (approximate to 430 MHz from 4.25 to 4.68 GHz), and 5.34% (approximate to 490 MHz from 8.93 to 9.42 GHz). The generated 3 dB axial ratio bandwidths of the proposed antenna are 7.54, 8.98, and 1.65% at operating frequencies around 2.65, 4.45, and 9.09 GHz, respectively. The measured peak gains within the 3 dB axial ratio bands are 3.03, 3.5, and 5.64 dBi. The simulated and measured results for the return loss, axial ratio, and antenna gain show a good agreement, which validate the antenna design.
机译：提出并通过实验研究了三频圆极化（CP）宽缝隙天线的简单设计。所提出的天线具有微带馈送的矩形贴片，该矩形贴片具有用于三频操作的T形槽口和用于CP操作的接地平面上的改进的宽方形槽。测得的10 dB反射带宽为1.24％（从2.56至2.9 GHz约340 MHz），9.63％（从4.25至4.68 GHz约430 MHz）和5.34％（从8.93至9.42 GHz约490 MHz）。在2.65、4.45和9.09 GHz的工作频率下，拟议天线产生的3 dB轴向比率带宽分别为7.54、8.98和1.65％。在3 dB轴向比率带内测得的峰值增益为3.03、3.5和5.64 dBi。回波损耗，轴向比和天线增益的仿真和测量结果显示出良好的一致性，从而验证了天线设计。

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