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首页> 外文期刊>AEU: Archiv fur Elektronik und Ubertragungstechnik: Electronic and Communication >A very compact and closely spaced circular shaped UWB MIMO antenna with improved isolation
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A very compact and closely spaced circular shaped UWB MIMO antenna with improved isolation

机译：一种非常紧凑且紧密间隔的圆形UWB MIMO天线，具有改善的隔离

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摘要

A very compact and closely spaced circular-shaped UWB - MIMO antenna with slotted T-shaped stubs and protruded strips for high isolation is discussed in the present paper. The fractional bandwidth of the proposed model reaches 134.68% from 2.82 GHz to 14.45 GHz with S11 < - 10 dB, which covers the unlicensed band 3.1-10.6 GHz approved by FCC in 2002 and X-band applications. The proposed model is fabricated on an FR-4 substrate having dimensions of 0.150 lambda(0) x 0.244 lambda(0) (16 x 26 mm(2)) and tested. The antenna elements in the proposed modal are separated by a small distance of 0.018 ko (2 mm). Due to T-shaped stubs and rectangular-shaped protruded strips, the isolation is improved to higher than 22 dB in most of the band. The proposed antenna achieves a maximum peak gain of 6.86 dB at 10.7 GHz. Radiation efficiency is above 91.70% for the entire band. The diversity performance metrics such as Envelope Correlation Coefficient (ECC), Diversity Gain (DG), and Total Active Reflection Coefficient (TARC) are studied and the values are lower than 0.08, greater than 9.984 dB and below -10 dB respectively. The measured and simulated values are found to be in good agreement. (C) 2019 Elsevier GmbH. All rights reserved.
机译：本文讨论了具有开槽T形短截线的非常紧凑且紧密间隔的圆形UWB - MIMO天线和用于高隔离条的突出条。拟议模型的分数带宽从2.82GHz到14.45GHz的S11 < - 10 dB达到134.68％，涵盖了2002年由FCC批准的未许可的频段3.1-10.6 GHz和X频段应用。所提出的模型在FR-4基板上制造，其尺寸为0.150λ（0）×0.244λλ（0）（16×26mm（2））并进行测试。所提出的模态中的天线元件通过0.018ko（2mm）的小距离分离。由于T形短截线和矩形突出条带，在大部分带中，隔离得到改善为高于22 dB。所提出的天线在10.7GHz的最大峰值增益为6.86 dB。整个频段的辐射效率高于91.70％。研究了诸如包络相关系数（ECC），分集增益（DG）和总有源反射系数（TARC）的分集性能度量，并且该值分别低于9.984dB，低于-10dB。发现测量值和模拟值良好的一致性。 （c）2019年Elsevier GmbH。版权所有。

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