The variable impedance scaling method for design of SCN has been improved in the Paper, the resulting is that the analogue filter can be realized by Passive SCN.
改进了目前采用的开关电容网络阻抗标度设计法，使模拟滤波器可以用无源开关电容网络完成。
2
First, the paper researches impedance character of LC passive filter and the influence for reactive power. And deduces parameters of LC passive filter.
Several new topologies of the HAPF system are proposed which come from the study on impedance-frequency characteristic of the passive filter of HAPF system.