摘要
对典型的开关电源传导EMI噪声源的产生机理进行了分析,指出了噪声源(包括共模和差模)特性阻抗的测试方法,重点介绍了插入损耗法,并提出了对该方法的改进;初步仿真结果验证了其正确性。
The generation mechanism of the typical switching power supply conducted EMt noise source is analyzed, pointing out that the noise sources （including the common mode and differential mode） characteristic impedance of the test methods, focusing on the insertion loss method, and put forward the method of improvement; preliminary simulation results to verify its Correctness.
出处
《电子质量》
2010年第4期72-73,77,共3页
Electronics Quality
关键词
开关电源
EMI
特性阻抗
插入损耗法
Switching Power Supply
EMI
characteristic impedance
the insertion loss method
