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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Design of Defective EBG Structures for Dual-Band Circular Patch MIMO Antenna Applications
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Design of Defective EBG Structures for Dual-Band Circular Patch MIMO Antenna Applications

机译：双带圆形贴片MIMO天线应用的缺陷EBG结构设计

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摘要

Usually, a reasonably designed electromagnetic band-gap (EBG) structure can reduce the surface wave of an antenna. However, it may take a long time to design. In this paper, a dual-band circular patch multiple-input multiple-output (MIMO) antenna on an EBG surface is proposed. Defects are simply introduced into rows and columns of the EBG cells. In this way, the band-gap bandwidth (BG-BW) of those cells can be as large as 29.2%, which enables the EBGs can cover two frequency bands with a large interval, and to generate over 25 dB isolation between the antenna elements, as well. The measured results show that the proposed antenna, incorporating defective EBGs, operates at 5.71-5.97 GHz and 6.31-6.54 GHz. The -10 dB impedance bandwidth of the antenna is extended by 28.9% and 27.8% at the low and high frequency band. In addition, its gain is enhanced by 5 dB and 6.9 dB, and its back radiation decreased by 15 dB and 10.3 dB at the resonant frequencies of 5.75 GHz and 6.44 GHz, respectively. The proposed design may have many applications in communication systems.
机译：通常，合理设计的电磁带 - 间隙（EBG）结构可以减小天线的表面波。但是，它可能需要很长时间才能设计。本文提出了EBG表面上的双频圆形贴片多输入多输出（MIMO）天线。简单地引入了缺陷的缺陷和eBG细胞的行和列。以这种方式，这些单元的带间隙带宽（BG-BW）可以大至29.2％，这使得EBG能够覆盖具有大间隔的两个频带，并且在天线元件之间产生超过25dB的隔离也是如此。测量结果表明，拟议的天线包含缺陷的EBG，在5.71-5.97 GHz和6.31-6.54 GHz下运行。天线的-10 dB阻抗带宽在低频和高频带中延长了28.9％和27.8％。此外，其增益增强了5 dB和6.9dB，其后辐射分别在5.75GHz和6.44GHz的共振频率下降低了15dB和10.3dB。所提出的设计可能在通信系统中具有许多应用。

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