双宽带圆极化圆形贴片天线，带有两个半寄生环和缺陷接地结构

2015 Communication, Control and Intelligent Systems (CCIS) Pub Date : 2015-11-01 DOI:10.1109/CCINTELS.2015.7437873

Ashok Kumar, Mithilesh Kumar, G. Parmar

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引用次数: 2

摘要

一种带有寄生环和缺陷接地结构的双宽带圆极化圆贴片的设计。采用同轴探头相对于贴片的两个短平面轴线45°进给，可获得良好的圆偏振效果。该天线采用双层结构，包括沿直径方向有两个矩形短桩的圆形贴片和正上方的两个半寄生环。两个贴片由圆形底物FR-4 (εr = 4.3)隔开。地平面也叛变了;在接地面处开两个圆槽。通过使用缺陷接地结构(DGS)，带宽也得到了提高。该天线工作于6.90 ~ 7.10 GHz (200 MHz)和8.06 ~ 9.22 GHz (1.16 GHz)双宽带。带宽分别为2.69%和13.42%，增益分别为6.2 dB和8.3 dB。天线的回波损耗和增益表明，该天线在各种c波段和X波段(7-12 GHz)雷达和卫星应用中具有良好的性能。本设计采用CST(计算机仿真技术)软件进行仿真。

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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Dual wide band circularly polarized circular patch antenna with two half parasitic rings and defected ground structure

A design of dual wide band circularly polarized circular patch with parasitic ring and defected ground structure. By using the coaxial probe feed 45° with respect to the axis of the two stub plane of the patch then excellent circular polarization (CP) is achieved. The antenna is designed with a double-layer structure, comprising a circular patch with two rectangular stubs along the diameter direction and two half parasitic rings right above it. Both patch are separated by a circular substrate FR-4 (εr = 4.3). The ground plane also defected; two circular slots are cut away at the ground plane. By using the defected ground structure (DGS) the band width also increased. This proposed antenna work at dual wide band that are 6.90 to 7.10 GHz (200 MHz) and 8.06 to 9.22 GHz (1.16 GHz). The % band width is 2.69% and 13.42% and Gain is 6.2 dB and 8.3 dB respectively. The return loss & gain of the proposed antenna show that it has promising characteristics for various C-band and X- band (7-12 GHz) radar and satellite applications. The design is being simulated using CST (computer simulation technology) software.

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来源期刊

2015 Communication, Control and Intelligent Systems (CCIS)

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