带陷波特性的平面椭圆超宽带天线

Int. J. Wirel. Opt. Commun. Pub Date : 2007-05-01 DOI:10.1142/S0219799507000631

D. D. Krishna, M. Gopikrishna, C. Aanandan, P. Mohanan, K. Vasudevan

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引用次数: 6

摘要

提出了一种适用于超宽带通信系统的共面波导馈电平面椭圆单极天线。天线具有2.64-10.9 GHz的宽阻抗带宽，具有全向辐射方向图。此外，通过在贴片内插入窄的水平狭缝，在宽频带内获得了以5.45 GHz为中心的缺口带。通过改变狭缝参数可以很容易地调谐陷波频率。狭缝显著降低了陷波带的增益，而对天线在其他频率的工作几乎没有影响。时域研究表明，除陷波频率外，该天线在整个频带内均呈线性相位响应。瞬态分析表明，该天线的脉冲畸变很小，适用于脉冲系统。

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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Planar Elliptical UWB Antenna with Band-notch Characteristics

A coplanar waveguide-fed planar elliptical monopole antenna suitable for use in ultra-wide band communication systems is presented. Antenna exhibits a wide impedance bandwidth from 2.64–10.9 GHz with an omni-directional radiation pattern. Further, a notched band centered at 5.45 GHz is obtained within the wide bandwidth by inserting a narrow horizontal slit inside the patch. The notched frequency can be easily tuned by varying the slit parameters. The slit provides significant reduction in gain in the notch band with little effect on the antenna operation at other frequencies. The time domain studies on the antenna shows a linear phase response throughout the band except at the notched frequency. The transient analysis of the antenna indicates very little pulse distortion confirming its suitability for pulsed systems.

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Int. J. Wirel. Opt. Commun.

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