摘要
针对Hubing电流驱动模型中认为电流在辐射线缆中是均一分布的,幅值和相位保持不变即未考虑辐射线缆共模电流频率效应给辐射电磁干扰噪声预估带来的误差的问题.文中利用电流传输波动特性建立了辐射线缆长度与共模电流波长为同一数量级时的辐射线缆共模电流分布模型,并设计电路模型进行测试预估.实验结果表明:采用文中方法预估辐射电磁干扰噪声与Hubing电流驱动模型预估方法相比能提高20.12dB_μV/m,更加接近标准暗室测试结果,从而为辐射电磁干扰(Electro Magnetic Interference,EMI)测试与分析提供理论依据.
Fast reconstruction method for radiated targets based on current-driven common mode radiation model is proposed to analyze that current is uniformly distributed in the radiation cable.A novel method is proposed to analyze the radiated source characteristic according to printed circuit board（PCB）circuit and EM field analysis,and the full-wave model of common mode（CM）current is proposed in the radiation cable.The theory and experiment results show that the radiation electromagnetic interference noise could be improved 20.12 dB V/m compared with current-driven common mode radiation model by using the suggest method.Therefore,the suggest method can provides new theoretical reference for radiation electromagnetic interference noise forecast.
出处
《电波科学学报》
EI
CSCD
北大核心
2016年第6期1202-1208,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.51475246)
江苏省高校自然科学基金(15KJB470011)
关键词
电磁兼容
电流驱动辐射模型
共模辐射
辐射电磁干扰
测量校准
electromagnetic compatibility（EMC）
current-driven radiation model
radiated electromagnetic interference
common mode（CM）radiation
measurement calibration
