In this paper

the design method of a passive filter is mainly introduced

which combines the advantages of the optimization algorithm and the simulation analysis. This method is based on the program written by the author

which controls the Matlab Simulink model of filter. It can automatically modify the capacitance and inductance parameters of the filter

and evaluate the simulation results. Using the computing power of the computer

the complex calculation in the traditional method is simplified. This method has the advantages of simple use

fast operation

and can be applied to a variety of filter type design by simple modification.