A Measurement-based performance evaluation of a tri-polarized MIMO antenna in a reverberation chamber

2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI:10.1109/IEEE-IWS.2015.7164552

Dazhi Piao, Peng Chen, Lingyu Yang, Yi Mao

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Abstract

A co-located tri-polarized dipole (TPD) antenna with low mutual coupling is proposed and fabricated in this paper. The TPD antenna has a measured isolation performance better than -25 dB over the working bandwidth of 2.35-2.53 GHz. Furthermore, the correlation coefficients of the TPD MIMO channel are measured in a lossy and non-lossy reverberation chamber, individually. In both the transmitting (Tx) and receiving (Rx) end, the average values of the correlation coefficients in the two cases are about 0.33 and 0.11 respectively, which indicates that the TPD MIMO antenna has a good multiplexing performance. More importantly, we have found that except for the signal correlation, the relative path loss is also very important in the MIMO capacity comparison in different propagation scenarios. It is shown that in the lossy and non-lossy reverberation chamber, the TPD antenna have similar multiplexing performance; however, if the relative path loss is included, the MIMO capacity in the lossy reverberation chamber is obviously smaller than that in the non-lossy one, with the same Tx and Rx antenna.

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混响室中三极化MIMO天线的测量性能评估

本文提出并制作了一种低互耦的共定位三极化偶极子天线。在2.35-2.53 GHz的工作带宽范围内，TPD天线的实测隔离性能优于-25 dB。此外，在有损耗和无损耗混响室中分别测量了TPD MIMO通道的相关系数。在发射端(Tx)和接收端(Rx)，两种情况下相关系数的平均值分别约为0.33和0.11，表明TPD MIMO天线具有良好的复用性能。更重要的是，我们发现除了信号相关性之外，在不同传播场景下的MIMO容量比较中，相对路径损耗也是非常重要的。结果表明，在有损混响室和非有损混响室中，TPD天线具有相似的复用性能;然而，如果考虑相对路径损耗，在相同的Tx和Rx天线下，有损耗混响室的MIMO容量明显小于无损耗混响室。

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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2015 IEEE International Wireless Symposium (IWS 2015)

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