电磁波等效辐射功率测试方法研究  

Research on measurement method of electromagnetic wave Equivalent Radiation Power

作　　者：张伟 钟洋[1,2] 郭璐璐 李三勇 王倩 Zhang Wei;Zhong Yang;Guo Lulu;Li Sanyong;Wang Qian(CETC Rongwei Electronic Technology Co.,Ltd,Chengdu Sichuan,610074;Southwest China Research Institute of Electronic Equipment,Chengdu Sichuan,610036)

机构地区：[1]中电科蓉威电子技术有限公司,四川成都610074 [2]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《电子测试》2022年第3期68-71,共4页Electronic Test

摘　　要：针对等效辐射功率(Equivalent Radiation Power,ERP)外场测试的问题,对测试方法进行了介绍,并梳理了外场测试系统构建的关注点,以保证测试的简便性和测量的准确性。同时对比分析了自由空间模型和双线模型两种电磁波空衰模型,由于存在多径效应,双线模型比自由空间模型能更好的反应电磁波在空间的衰减情况,最后通过实验模拟外场测试环境,搭建了测试系统,经过多次测量电磁波功率值并计算均值,分别带入自由空间模型和双线模型对ERP进行评估,实验结果表明双线模型比自由空间模型具有更好的评估效果。Aiming at the problem of Equivalent Radiated Power measurement,the measurement method is introduced,and the concerns of the construction of test system are combed to ensure the simplicity and accuracy of the test.At the same time,two kinds of electromagnetic wave space attenuation models:free space model and double line model are compared and analyzed.Due to the existence of multipath effect,the two-wire model can better reflect the attenuation of electromagnetic wave in space than the free space model.Finally,the test system is built through the experimental simulation of the field test environment.After multiple measurements and calculations,the mean values are brought into the free space model and the two-line model to evaluate the ERP,The experimental results show that the double line model has better evaluation effect than the free space model.

关 键 词：等效辐射功率 多径效应 双线模型 自动测试系统 

分 类 号：TN972[电子电信—信号与信息处理]