Design and analysis of compact size dual polarised ultra wideband MIMO antennas with simple decoupling structure

2016 21st International Conference on Microwave, Radar and Wireless Communications (MIKON) Pub Date : 2016-05-09 DOI:10.1109/MIKON.2016.7492068

Abdullah Alfakhri, M. Ashraf, A. Alasaad, S. Alshebeili

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引用次数: 8

Abstract

In this paper, a quad elements, differentially fed, dual polarized Ultra-Wideband Multiple-Input Multiple-Output (UWB-MIMO) antenna system is presented. The unit UWB antenna element is of compact size with the dimensions of 22×24 mm2. The proposed MIMO antenna structure consists of two pairs of dual polarized rectangular shape UWB monopole antennas. A simple decoupling structure (DS) comprising of rectangular stubs is optimized with several full wave simulations to improve the isolation among the antennas. The proposed MIMO system exhibits reflection coefficient whose value is less than -10 dB from 4.5 GHz - 11.5 GHz. Different important parameters such as radiation characters, time domain received signals from each antenna element, electric field distribution, envelop correlation coefficient and diversity gain are calculated, analyzed and compared. The diversity antenna system with decoupling structure has shown a significant better performance compared to the system without decoupling structure.

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具有简单解耦结构的小尺寸双极化超宽带MIMO天线设计与分析

提出了一种四元差分馈电双极化超宽带多输入多输出(UWB-MIMO)天线系统。单位超宽带天线元件尺寸紧凑，尺寸为22×24 mm2。提出的MIMO天线结构由两对双极化矩形超宽带单极天线组成。通过多次全波仿真，优化了一种由矩形存根组成的简单解耦结构，提高了天线间的隔离度。在4.5 GHz ~ 11.5 GHz范围内，MIMO系统的反射系数小于-10 dB。对各天线单元的辐射特性、时域接收信号、电场分布、包络相关系数和分集增益等重要参数进行了计算、分析和比较。采用解耦结构的分集天线系统性能明显优于不采用解耦结构的分集天线系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 21st International Conference on Microwave, Radar and Wireless Communications (MIKON)

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