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首页> 外文期刊>International journal of communication systems >Design and analysis of a novel compact spanner-shaped ultra-wideband antenna for MIMO systems
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Design and analysis of a novel compact spanner-shaped ultra-wideband antenna for MIMO systems

机译：用于MIMO系统的小型扳手形超宽带天线的设计与分析

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摘要

In this communication, a novel compact spanner shaped ultra-wideband (UWB) antenna is designed for multiple input multiple output (MIMO) system applications. The proposed structure of size 24 x 32 mm(2) (0.24 lambda(0) x 0.32 lambda(0), lambda(0) is calculated at lower band frequency) is designed and fabricated on widely available FR4 dielectric material with a dielectric constant of 4.4 and loss tangent of 0.02. The proposed structure comprises two spanner shaped antennas, a defected T-shaped stub and a pair of small vertical strips. The defected T-shaped stub and vertical strips are used for getting a complete UWB bandwidth and good isolation between two elements. It is performing from 3.0 to 11.0 GHz with isolation more than 20 dB in most of the operating region. The parametric studies have been done for the required parameters and figured out the surface current distribution at different resonant frequencies within the working region. The MIMO antenna diversity performance is confirmed with low values of envelope correlation coefficient (ECC 0.005), channel capacity losses (CCL 0.04 bits/s/Hz), acceptable mean effective gain (MEG = -3 dB, MEG ratio = 0 dB), and total active reflection coefficient (TARC = -10 dB) values. The peak gain values are varying from 1.5 to 6.0 dBi, and the radiation efficiency values are above 83% for the entire operating region. The simulated and measured values are well matched.
机译：在该通信中，设计了一种新型的紧凑型扳手形的超宽带（UWB）天线，专为多输入多输出（MIMO）系统应用而设计。所提出的结构尺寸为24×32mm（2）（0.24λ（0）×0.32λ（0），在较低频带频率下计算λ（0）），设计和制造在广泛的FR4介电材料上，具有介电常数4.4和损失切线0.02。所提出的结构包括两个扳手形天线，缺陷的T形短柱和一对小垂直条带。缺陷的T形存根和垂直条带用于在两个元件之间获得完整的UWB带宽和良好的隔离。它在大部分操作区域中的隔离超过20 dB的3.0到11.0 GHz。已经为所需参数进行了参数研究，并在工作区域内的不同谐振频率下设计出表面电流分布。以低值的包络相关系数（ECC <0.005），信道容量损耗（CCL <0.04位/赫兹）确认了MIMO天线分集性能，可接受的平均有效增益（MEG <= -3 dB，MEG比率= 0 DB）和总有源反射系数（Tarc <= -10 dB）值。峰值增益值从1.5到6.0 dbi变化，辐射效率值高于整个操作区域的83％。模拟和测量值良好匹配。

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