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首页> 外文期刊>IEEE Transactions on Antennas and Propagation >Design of Ultrawideband Planar Monopole Antennas of Circular and Elliptical Shape
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Design of Ultrawideband Planar Monopole Antennas of Circular and Elliptical Shape

机译：椭圆形超宽带平面单极天线设计

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摘要

An efficient approach is described for designing ultrawideband (UWB) antennas in the form of planar monopoles of elliptical and circular shape. To avoid the time consuming trial-and-error approach presented in other works, simple design formulas for this type of radiators are described and their validity is tested via electromagnetic analysis and measurements. Full electromagnetic wave investigations are performed assuming three types of substrates with wide range of dielectric constant and thickness. The presented results show that the proposed method can be applied directly to design planar antennas that cover the ultrawide frequency band from 3.1 GHz to more than 10.6 GHz. Four types of monopole antennas were manufactured using RT6010LM substrate and their operation was tested in terms of return loss, radiation pattern characteristics, gain, and time domain response. The developed antennas feature UWB behavior with near omnidirectional characteristics and good radiation efficiency. The time domain transmission tests between two identical elements show that the manufactured circular monopoles offer better performance in terms of distortionless pulse transmission than their elliptically shaped counter parts. These antennas are also assessed in terms of fidelity factor. The manufactured antennas show a high fidelity factor which is more than 90% for the face-to-face orientation.
机译：描述了一种设计椭圆形和圆形平面单极子形式的超宽带（UWB）天线的有效方法。为了避免其他工作中耗时的反复试验方法，描述了这种散热器的简单设计公式，并通过电磁分析和测量来测试其有效性。假设介电常数和厚度范围很广的三种类型的基板，将进行全面的电磁波研究。提出的结果表明，所提出的方法可以直接应用于设计覆盖3.1 GHz至超过10.6 GHz的超宽频带的平面天线。使用RT6010LM基板制造了四种类型的单极天线，并在回波损耗，辐射方向图特性，增益和时域响应方面测试了它们的操作。研发的天线具有超宽带特性，具有近乎全向的特性和良好的辐射效率。在两个相同元件之间进行时域传输测试表明，与椭圆形配对部件相比，制造的圆形单极子在无失真脉冲传输方面具有更好的性能。这些天线还根据保真因子进行评估。所制造的天线显示出较高的保真度，对于面对面的定向而言，该保真度大于90％。

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