宽圆极化带宽和轴比波束宽度的方形缝隙天线

IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electrical Control and Communication Engineering Pub Date : 2021-06-01 DOI:10.2478/ecce-2021-0001

Vijay Sharma, Tejpal Jhajharia

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引用次数: 5

摘要

摘要本文提出了一种具有宽带圆极化特性的共面波导馈电方形缝隙天线的设计研究和实验结果。这种圆偏振特性是通过在槽的左下角嵌入方形短截线和在槽的右上角嵌入L形条来实现的。该天线结构在整个感兴趣的频率范围内实现了87.8%的高阻抗带宽（3.6–9.0 GHz）、73.05%的宽轴比带宽（4.2–9.0GHz）和90°的宽3dB轴比波束宽度。为了提高3dB的轴比带宽，在接地平面的外周划出三个槽（两个水平槽和一个垂直槽）。这些微扰组件负责激发正交模式，并有助于增加轴比带宽。所设计的天线在所关注的整个频率范围内显示出恒定和稳定的辐射方向图。所提出的紧凑型天线的总体尺寸为0.24λ×0.24λx 0.01λ。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

Abstract The article proposes design investigation and experimental results of a coplanar waveguide (CPW) fed square slot antenna that gives wideband circular polarization. This circular polarization characteristic is achieved by embedding a square shape stub to left bottom corner and an L-shaped strip to the right upper corner of the slot. A high impedance bandwidth of 87.8 % (3.6–9.0 GHz), a wide axial ratio bandwidth of 73.05 % (4.2–9.0 GHz) and wide 3-dB axial ratio beamwidth of 90° in the entire frequency range of interest are achieved with this antenna structure. To improve the 3-dB axial ratio bandwidth, three slots (two horizontal and one vertical) are scratched at the exterior periphery of the ground plane. These perturbation assemblies are accountable to excite orthogonal modes and help increase an axial ratio bandwidth. The designed antenna displays the constant and steady radiation patterns in the complete frequency range of concern. The overall dimension of the presented compact antenna is 0.24λ × 0.24λ × 0.01λ.

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来源期刊

Electrical Control and Communication Engineering ENGINEERING, ELECTRICAL & ELECTRONIC-

自引率

14.30%

发文量

审稿时长

12 weeks