This paper describes a new design for a coplanar waveguide (CPW) fed high gain key-shaped resonator based microstrip monopole antenna for ultra-wideband (UWB), X-band to Ku-band applications. An ellipse and circular combinational patch with three stepped transitions of appropriate dimensions at the lower edge and a circular parasitic patch at the back end is used in this proposed antenna. The antenna was simulated, constructed, and tested in order to show how the analysis worked. A modest profile of 0.30λ 0 × 0.16λ 0 is recommended for the proposed prototype. The designed antenna has a gain of 7.3 (dBi). It attained a fractional bandwidth (FBW) of 146% with an impedance bandwidth of 2.95–19.15 GHz. The bandwidth of the Full Width Half Maxima (FWHM) is more than 17.38 GHz and ranges from 2.62 GHz to greater than 20 GHz. For validation, the proposed antenna’s equivalent lumped circuit model and the time domain to evaluate the transient behaviour of the antenna are presented. The findings of the experiment and simulation are found to be in concurrence. In comparison to previously reported structures, the developed antenna has a wider bandwidth, a higher gain, and a lower profile.

中文翻译：

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适用于射频敏感环境和 X-Ku 波段应用的紧凑型高增益键形单极天线

本文介绍了一种用于超宽带 (UWB)、X 波段到 Ku 波段应用的基于共面波导 (CPW) 馈电高增益键形谐振器的微带单极天线的新设计。在这个提议的天线中使用了一个椭圆和圆形组合贴片，在下边缘具有三个适当尺寸的阶梯式过渡，在后端使用一个圆形寄生贴片。对天线进行了模拟、构造和测试，以展示分析的工作原理。0.30 的适度轮廓λ 0× 0.16λ 0建议用于提议的原型。设计的天线增益为 7.3 (dBi)。它获得了 146% 的分数带宽 (FBW)，阻抗带宽为 2.95–19.15 GHz。全宽半最大值 (FWHM) 的带宽超过 17.38 GHz，范围从 2.62 GHz 到大于 20 GHz。为了验证，提出了天线的等效集总电路模型和评估天线瞬态行为的时域。实验结果与模拟结果一致。与之前报道的结构相比，开发的天线具有更宽的带宽、更高的增益和更低的轮廓。