在深入分析无源EMI滤波器工作原理的基础上,提出了一种低灵敏度的EMI滤波器的设计方法,通过控制网络输入端口反射系数的模值,采用遗传算法设计了一个五阶低通滤波器,并与Chebyshev原型滤波器进行比较.仿真实验表明所设计的滤波器具有随负载变化灵敏度小的优点,证明了该方法的有效性.%Basing on analyzing the passive EMI filter theory, a design method for low sensitivity EMI filter was proposed; and the Genetic Algorithm ( GA) was taken to design a fifth-order low-pass filter by controlling the reflection factor at input port, and then having this filter compared with Chebyshev filter. The simulation result proves this filters less sensitivity with load and the validity of this approach.
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