Analysis of far-field radiation and multi antenna coupling characteristics of antenna on shared tower

2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI:10.1109/GEMCCON50979.2020.9456708

Huashen Guan, Yulai Kuang, Guozheng Huang, Xiao-Bin Li

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Abstract

The calculation and analysis of the far-field radiation of the antenna on the shared tower and the coupling characteristics of the multi antenna system are the key links to study the electromagnetic compatibility and engineering construction of the shared tower. However, there is no relevant research on this issue. In this paper, the full-scale electromagnetic simulation model of the shared tower is established in FEKO software. Then, based on the multi-layer fast multipole theory and the generalized S-parameter theory, the far-field radiation pattern of the antenna and the expression of the coupling degree of the multiple antennas are given. Based on the above research, the change rules of the far-field radiation pattern and the coupling characteristics of the multiple antennas on the shared tower are calculated respectively. The results show that the radiation pattern and coupling degree of multiple antennas are related to harmonics, antenna spacing, antenna frequency and surrounding scatterers. Based on the calculation results, the suggestion of 1.5m protection spacing is given. The research results of this paper can provide reference for EMC analysis and multi antenna layout optimization of the shared tower.

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共享塔天线远场辐射及多天线耦合特性分析

天线在共享塔上远场辐射的计算和分析以及多天线系统的耦合特性是研究共享塔电磁兼容和工程建设的关键环节。但是，目前还没有相关的研究。本文在FEKO软件中建立了共享塔的全尺寸电磁仿真模型。然后，基于多层快速多极理论和广义s参数理论，给出了天线的远场辐射方向图和多天线耦合度的表达式。在此基础上，分别计算了共享塔上多天线远场辐射方向图的变化规律和耦合特性。结果表明，多天线的辐射方向图和耦合程度与谐波、天线间距、天线频率和周围散射体有关。根据计算结果，提出了保护间距为1.5m的建议。本文的研究结果可为共享塔的电磁兼容分析和多天线布局优化提供参考。

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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来源期刊

2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)

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