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Mutual Coupling Reduction between Closely Spaced U-slot Patch Antennas by Optimizing Array Configuration and its Applications in MIMO.

机译：通过优化阵列配置来减少紧密间隔的U缝隙贴片天线之间的相互耦合及其在MIMO中的应用。

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摘要

Multiple-input, multiple-output (MIMO) systems have received considerable attention over the last decade. There are some limitations when obtaining the most from MIMO, such as mutual coupling between antenna elements in an array. Mutual coupling and therefore inter-element spacing have important effects on the channel capacity of a MIMO communication system, its error rate, and ambiguity of MIMO radar system. There is a huge amount of research that focuses on reducing the mutual coupling in an antenna array to improve MIMO performance.;In this research, we focus on the antenna section of the system. Antenna design affects the performance of Multiple-Input-Multiple-output (MIMO) systems. Two aspects of an antenna's role in MIMO performance have been investigated in this thesis. Employing suitable an antenna or antenna array can have a significant impact on the performance of a MIMO system. In addition to antenna design, another antenna related issue that helps to optimize the system performance is to reduce mutual coupling between antenna elements in an array. Much research has focused on the reduction of mutual coupling.;In this research, the effect of the antenna configuration in array on mutual coupling has been studied and the main purpose is to find the array configuration that provides the minimum mutual coupling between elements.;The U-slot patch antenna is versatile antennas that because of its features like wide bandwidth, multi-band resonance and the ease of achieving different polarizations. This research first investigated the u-slot patch antenna, its features and capabilities. Second a CAD optimization to design a low profile, dual band U-slot patch antenna is provided. Designed antenna is a dual band antenna that is intended to work at 3.5 and 5 GHz and have sufficient gain of at least 3dB.;The effect of mutual coupling on MIMO systems is studied and then different array configurations were considered for two closely spaced U-slot patch antennas. Different configurations show different mutual coupling behavior. After modeling and simulation, the array was designed, implemented and finally tested in an anechoic chamber. These results are compared to both simulation and theoretical results and the configuration with minimum amount of mutual coupling was found. Some radar experiments also have been done to prove the effect of mutual coupling on radar performance.
机译：在过去的十年中，多输入多输出（MIMO）系统受到了相当大的关注。从MIMO获得最大收益时存在一些局限性，例如阵列中天线元件之间的相互耦合。相互耦合以及元素之间的间距对MIMO通信系统的信道容量，其误码率以及MIMO雷达系统的歧义性都有重要影响。有大量的研究集中在减少天线阵列中的互耦合以提高MIMO性能上。在本研究中，我们集中于系统的天线部分。天线设计会影响多输入多输出（MIMO）系统的性能。本文研究了天线在MIMO性能中的作用的两个方面。使用合适的天线或天线阵列可能会对MIMO系统的性能产生重大影响。除了天线设计之外，有助于优化系统性能的另一个与天线相关的问题是减少阵列中天线元件之间的相互耦合。许多研究集中在减少互耦上。在本研究中，研究了阵列中的天线配置对互耦的影响，主要目的是寻找在元件之间提供最小互耦的阵列配置。 U型缝隙贴片天线是通用天线，由于其具有宽带宽，多频带谐振以及易于实现不同极化等特点。这项研究首先研究了U型缝隙贴片天线，其特性和功能。其次，提供CAD优化以设计薄型双频段U形缝隙贴片天线。设计的天线是旨在在3.5和5 GHz上工作并且具有至少3dB的足够增益的双频带天线。;研究了互耦合对MIMO系统的影响，然后针对两个紧密间隔的U-缝隙贴片天线。不同的配置显示不同的相互耦合行为。经过建模和仿真后，对该阵列进行了设计，实施并最终在消声室内进行了测试。将这些结果与仿真结果和理论结果进行了比较，发现了具有最小互耦量的配置。还进行了一些雷达实验，以证明互耦对雷达性能的影响。

著录项

  • 作者

    Niakan, Nahal.;

  • 作者单位

    University of Kansas.;

  • 授予单位 University of Kansas.;
  • 学科 Electrical engineering.
  • 学位 M.S.
  • 年度 2014
  • 页码 93 p.
  • 总页数 93
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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