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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Bandwidth Enhancement of Small Square Monopole Antenna with Dual Band Notch Characteristics Using U-Shaped Slot and Butterfly Shape Parasitic Element on Backplane for UWB Applications
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Bandwidth Enhancement of Small Square Monopole Antenna with Dual Band Notch Characteristics Using U-Shaped Slot and Butterfly Shape Parasitic Element on Backplane for UWB Applications

机译：在UWB应用中使用U型槽和背板上的蝴蝶形寄生元件增强具有双频带陷波特性的小方型单极天线的带宽

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摘要

In this study, a dual band notch rnicrostrip antenna for UWB applications has been presented. The antenna consists of a stepped patch with U-shaped slot, two rectangular shaped slots in the ground plane and a butterfly shaped parasitic backplane element structure. By inserting two rectangular shaped slots in the ground plane, much wider impedance bandwidth can be produced. This modification significantly improves the antenna's impedance bandwidth by 155% which covers the entire UWB bandwidth range and even more. In order to generate single band notch characteristic, a butterfly shaped conductor backplane structure is utilized on the ground plane side of the substrate. In addition, by cutting a U-shaped slot on the radiating patch, a dual band notch function is achieved. The measured frequency results show an impedance bandwidth of 2.35-13 GHz for a Voltage Standing Wave Ratio (VSWR) less than 2 with two eliminated bands placed at 3.25-3.85 GHz and 4.9-6.2 GHz, which reject the Wireless Local Area Network (WLAN) band, WiMAX band, and a major part of the C-band. The measured E-plane and H-plane radiation patterns show a very good correlation with the requirements of UWB applications.
机译：在这项研究中，已经提出了用于UWB应用的双频带陷波微带天线。天线由带U形槽的阶梯状贴片，接地平面上的两个矩形槽和蝴蝶形寄生背板元件结构组成。通过在接地平面中插入两个矩形槽，可以产生更大的阻抗带宽。此修改可将天线的阻抗带宽显着提高155％，覆盖整个UWB带宽范围甚至更多。为了产生单频带陷波特性，在基板的接地平面侧上利用蝴蝶状的导体底板结构。另外，通过在散热片上切一个U形槽，可以实现双频陷波功能。测得的频率结果显示，对于电压驻波比（VSWR）小于2的阻抗带宽为2.35-13 GHz，并且在3.25-3.85 GHz和4.9-6.2 GHz处放置了两个消除的频带，从而拒绝了无线局域网（WLAN） ）频段，WiMAX频段和C频段的主要部分。测得的E平面和H平面辐射方向图显示与UWB应用的需求非常相关。

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