A New Method of Designing Double-tuned Filter

Abstract

Aiming at the question of parameter of double-tuned filter, A new method of designing double-tuned filter is proposed based on resonance frequency, by using the relationship that the impedance of double-tund filter and two parallel single tuned filters is equal and the resonance frequency of single tuned filter is the zero of the impedance of double-tuned filter. Simulation results show that the doubletuned filter designed in this method works well. All of this has an important guiding significance for the research of doubletuned filter.