利用缺陷接地结构改进隔离的双频MIMO天线设计与分析

2022 IEEE Wireless Antenna and Microwave Symposium (WAMS) Pub Date : 2022-06-05 DOI:10.1109/WAMS54719.2022.9848407

M. Himaja, D. Mondal, S. Yuvaraj, M. V. Kartikeyan

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引用次数: 1

摘要

针对S和C波段的应用，设计了一种双频紧凑型MIMO(多输入多输出)天线系统。设计的天线由两个辐射单元组成，尺寸紧凑，为$45\times 25\ \text{mm}^{2}$。设计的天线在两个谐振频率下的回波损耗均为$\vert\mathrm{S}_{11}\vert\leq-30\ \text{dB}$，为了提高两单元之间的隔离性，引入了缺陷接地结构。模拟的−10 dB阻抗带宽约为640 MHz (3.57 - 4.21 GHz)， 750 MHz (6.29 - 7.04 GHz)。此外，设计的天线在工作频率下的驻波比≤2，具有较低的包络相关系数(ECC)和较高的分集增益值，具有较好的分集性能。

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Design and Analysis of a Dual Band MIMO Antenna for Improved Isolation using the Defected Ground Structure

A dual band compact MIMO (Multiple Input Multiple Output) antenna system is designed for the suited applications at S and C band. The designed antenna consists of two radiating elements with compact size of $45\times 25\ \text{mm}^{2}$. The designed antenna has the return loss of $\vert\mathrm{S}_{11}\vert\leq-30\ \text{dB}$ at both of the resonant frequencies and to improve the isolation between the two elements defected ground structure is introduced. The simulated −10 dB impedance bandwidths are around 640 MHz (3.57 – 4.21 GHz), 750 MHz (6.29 – 7.04 GHz). In addition, the designed antenna has a VSWR value of ≤ 2 at the operating frequencies, and also has better diversity performance observed by low envelope correlation coefficient (ECC) and high diversity gain values.

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2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)

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