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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Compact UWB Microstrip-fed Slot Antenna with Dual-band Rejection by Using EBG and Four-arm Spiral Structures
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Compact UWB Microstrip-fed Slot Antenna with Dual-band Rejection by Using EBG and Four-arm Spiral Structures

机译：采用EBG和四臂螺旋结构的双频抑制紧凑型UWB微带馈送缝隙天线

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摘要

A microstrip-fed slot antenna with dual rejection bands is designed and prototyped for ultra-wideband (UWB) applications. The rejection band for WiMAX is achieved by symmetrical etching a pair of nested four-arm spiral slots on the ground plane. Selfinterdigital electromagnetic band-gap (EBG) structures are embedded to create other rejection bands for WLAN and are placed on both sides of the gradient T-shaped microstrip-fed. The simulated result and measurement data show that the antenna impedance bandwidth (Voltage Standing Wave Ratio is less than 2) covers the entire UWB bandwidth range with two eliminated bands of 3.22-3.81 GHz (0.59 GHz, 16.7%) and 5.11-5.84 GHz (0.73 GHz, 13.4%). In addition, the designed antenna achieves a stable gain and exhibits omnidirectional radiation patterns except at rejection frequency bands, which makes it a suitable candidate for UWB applications that will not be interfered by WiMAX/WLAN systems.
机译：具有双抑制频带的微带馈送缝隙天线是为超宽带（UWB）应用而设计和原型化的。通过在接地面上对称蚀刻一对嵌套的四臂螺旋槽，可以实现WiMAX的抑制带。嵌入自叉指形电磁带隙（EBG）结构以为WLAN创建其他抑制带，并将其放置在梯度T形微带馈电的两侧。仿真结果和测量数据表明，天线阻抗带宽（电压驻波比小于2）覆盖了整个UWB带宽范围，并消除了两个3.22-3.81 GHz（0.59 GHz，16.7％）和5.11-5.84 GHz（ 0.73 GHz，13.4％）。此外，所设计的天线实现了稳定的增益，除了在拒绝频带外，还表现出全向辐射方向图，这使其成为不受WiMAX / WLAN系统干扰的UWB应用的合适候选者。

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