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Electromagnetic interference and protection of shared iron tower base station antenna to online monitoring equipment

机译:用于在线监测设备的共用铁塔基站天线的电磁干扰和保护

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According to the electromagnetic compatibility standard of the existing online monitoring equipment, the interference mechanism of the base station antenna to the online monitoring equipment is analyzed. It is recommended to use the radio frequency radiation immunity of 10V / m as the anti-interference design limit. Combined with the antenna principle, the mathematical characterization formula of the base station antenna field source is deduced, so that a mathematical model for solving the scattering field of the electric large-size metal scatterer at any point in space under the multi-base station antenna radiation is proposed. Taking the Shandong shared iron tower as an example, the electric field strength change rule of the online monitoring equipment under the three working conditions of the tower head type, antenna power and antenna inclination is analyzed. Based on this, it is recommended to The protective spacing is set at 4 meters.
机译:根据现有在线监测设备的电磁兼容性标准,分析了基站天线对在线监测设备的干扰机制。建议使用10V / m的射频辐射免疫为抗干扰设计限制。结合天线原理,推导出基站天线场源的数学表征公式,使得用于在多基站天线下的空间中的任何点处求解电动大尺寸金属散射体的散射场的数学模型提出了辐射。以山东共用铁塔为例,分析了在塔式头型,天线电力和天线倾斜度的三个工作条件下在线监测设备的电场强度变化规则。基于此,建议将保护性间隔设定为4米。

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