宽带用CPW馈电改进椭圆单极天线的宽带特性

2021 International Conference on Disruptive Technologies for Multi-Disciplinary Research and Applications (CENTCON) Pub Date : 2021-11-19 DOI:10.1109/CENTCON52345.2021.9687889

C. Krishna, B. A. Pravalli, S. J. Rao, N. Murthy

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引用次数: 0

摘要

本文在介电常数为4.4的FR - 4环氧基板材料上设计了改进椭圆天线，提出了其损耗正切值为0.02的宽带应用方案。采用共面波导(CPW)馈电的传统椭圆贴片天线可实现5.70 - 13.96GHz的超宽带(UWB)特性，覆盖C和X波段应用。在6.44GHz和9.04GHz双谐振下，可以将椭圆几何形状修改为环形，获得1.32GHz和1.18GHz的阻抗带宽(IBW)。为了提高宽带性能，在椭圆结构内采用同心圆环外加加载短桩。本设计在4.05GHz、5.96GHz和14.42GHz下实现了阻抗带宽分别为460MHz (3.83-4.29GHz)、1.83GHz (4.62-6.45GHz)、9.03GHz (7.45-16.5GHz)的三宽带特性。该天线具有独特的全向辐射特性，侧瓣可忽略不计。建议的天线覆盖C波段(WiMax, WLAN)， X波段(卫星和雷达通信)和ku波段(如气象和船舶雷达)应用。

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Wideband characteristics of Modified Elliptical Monopole Antenna Fed with CPW for Wideband Applications

In this paper, modified elliptical antenna is designed on FR - 4 epoxy substrate material having dielectric constant 4.4 and its loss tangent 0.02 is proposed for wideband applications. Conventional elliptical patch antenna with Co-planar waveguide (CPW) feed attains Ultra - wide band (UWB) characteristics ranging from 5.70 - 13.96GHz to cover C - & X - band applications. Elliptical geometry can be modified into rings shape to obtain impedance bandwidth (IBW) 1.32GHz and 1.18GHz at dual resonances 6.44GHz and 9.04GHz. In order to enhance the wideband by employing concentric ring inside the elliptic structure in addition by loading stubs. This proposed design achieves tri-wide band characteristics having impedance bandwidths 460MHz (3.83-4.29GHz), 1.83GHz (4.62-6.45GHz), 9.03GHz (7.45-16.5GHz) respectively at 4.05GHz, 5.96GHz and 14.42GHz. The proposed antenna has unique and omni -directional radiation characteristics with negligible side lobes. The proposed antenna overs C - band (WiMax, WLAN), X - band (Satellite and radar communication) and Ku-band such as weather and ship radars applications.

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来源期刊

2021 International Conference on Disruptive Technologies for Multi-Disciplinary Research and Applications (CENTCON)

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