移动通信基站后向电磁场分布规律研究

采用实地监测的方法，对成都市肿瘤医院、双流小坝村、商汇大厦、成渝收费站及农机研究院5个基站天线后向场进行测试，分析研究其后向场的分布规律。研究结果表明，基站产生的电磁辐射功率密度与天线的距离呈反比；基站后向场电磁辐射安全防护距离为0．5m，大于此距离的区域，基站产生的电磁辐射功率密度小于《电磁辐射防护规定》及《电磁辐射监测仪器和方法》规定的0．08W／m^2的公众限值。

Study on Distribution of Mobile Communication base Station in Backward-electromagnetic Field

By using field monitoring method, this paper attempted to test backward - electromagnetic field and to analyze distribution rule of backward - electromagnetic field with empirical data collected from five base stations, namely, the Turnout Hospital of Chengdu, Shuangliu Xiaoba Village ; Shanghui Building, Cheng - Yu Freeway Toll Gate, and Research Institute of Agricultural Machine. The results demonstrated tat electromagnetic radiation power generated in base station was inversely proportional to the distance of antenna. It also presented a secured 0. 5 - meter prevention distance of backward - electromagnetic radiation of the generated in base station, which was lower than the prevention volume of O. 08w/m^2 widely accepted in accordance with ＂Regulations for electromagnetic radiation protection＂ and ＂Electromagnetic Radiation Monitoring Instruments and Methods＂.