5G基站电磁辐射

Electromagnetic radiation of 5G base station

基于5G基站前向功率控制和波束赋形等关键技术,设计单用户情况下5G基站电磁辐射测试方案。该方案根据电磁辐射功率密度随着距离平方减小的规律布点,可以在一定程度上提高宏基站测试效率。对本文所提监测方案进行现场实测,监测结果远小于国际非电离辐射防护委员会(ICNIRP)标准限值,表明5G基站电磁辐射水平总体可控。利用高频结构仿真器(HFSS)设计5G基站天线模型获取大规模多输入多输出(MIMO)天线阵方向图,基于实际场景电磁参数分析搭建场景,通过射线追踪算法对5G基站的电磁辐射进行预测。预测与监测结果相比误差不大,证明预测方法可靠。

Based on key technologies such as 5G base station forward power control and beam forming,the electromagnetic radiation test scheme for 5G base station under the condition of single user is designed.According to the regular layout of electromagnetic radiation power density decreasing with the square of distance,the test efficiency of macro base station can be improved to some extent.In addition,field measurement of the proposed monitoring scheme shows that the monitoring results are far less than the limit value of International Commission on Non-Ionizing Radiation Protection(ICNIRP)standard,indicating that the electromagnetic radiation level of 5G base station is generally controllable.Finally,High Frequency Structure Simulator(HFSS)is adopted to design the 5G base station antenna model to obtain the large-scale Multiple-Input Multiple-Output(MIMO)antenna array direction map,and the scene is built based on the electromagnetic parameter analysis of the actual scene.The electromagnetic radiation of 5G base station is predicted by ray tracing algorithm.The prediction results show little error compared with the monitoring results,which proves the reliability of the prediction method.