Simulation Analysis of the Filter with Frequency Dependent Coupling Coefficients

Gang Li


This paper illustrates a general approach to the simulation of the filter with frequency dependent coupling coefficients. Based on the frequency transformation formulas from lowpass to bandpass domain, circuit parameters can be determined and schematic model can be built to analyse the effects of frequency-dependent coupling coefficients on filter. A filter example is given finally to validate the proposed approach and the simulation results are in good agreement with the theory which verifies the correctness of the theory.


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