基于TEM小室的环天线校准系统研究  

Research on Loop Antenna Calibration System Based on TEM Cell

作　　者：郭启勇 曾宪金 GUO Qiyong;ZENG Xianjin(CEPREI,Guangzhou 511370,China)

机构地区：[1]工业和信息化部电子第五研究所计量检测中心,广东广州511370 [2]工业和信息化部电子第五研究所计量检测中心研发部,广东广州511370

出　　处：《电子产品可靠性与环境试验》2021年第5期80-85,共6页Electronic Product Reliability and Environmental Testing

摘　　要：环天线广泛地应用于电磁兼容辐射骚扰测量,为使测得的磁场强度准确可靠,必须对环天线的磁天线系数进行校准。针对该校准需求,讨论和分析了几种环天线校准方法,综合考虑成本等因素,基于TEM小室构建了一套环天线校准系统。首先,介绍了TEM小室的基本原理,评定了TEM小室磁场均匀性;然后,搭建了一套校准系统,并对校准系统的原理和校准方法进行了研究;最后,对校准系统进行了优化。测试结果表明:校准系统性能优良、准确可靠。Loop antenna is widely used for electromagnetic compatibility radiation disturbance measurement.In order to make the measured magnetic field intensity accurate and reliable,the magnetic antenna coefficient of loop antenna must be calibrated.For this calibration requirement,several loop antenna calibration methods are discussed and analyzed.Considering the cost and other factors,a loop antenna calibration system is constructed based on TEM cell.Firstly,the basic principle of TEM cell is introduced and the magnetic field uniformity of TEM cell is evaluated.Then,a calibration system is built,and the principle and method of calibration system are studied.Finally,the calibration system is optimized.The test results show that the performance of the calibration system is excellent,accurate and reliable.

关 键 词：环天线 TEM小室 标准场强法 校准系统 

分 类 号：TN820[电子电信—信息与通信工程]