Filter circuit

摘要

A circuit and method for filtering a signal. An amplifier receives an input signal and generates a differential output signal. A first resonator having series and parallel resonant frequencies is connected to the positive output port of the amplifier. A second resonator having series and parallel resonant frequencies is connected to the negative output port of the amplifier. The first and second resonators are coupled at a connection point. A buffering device receives the combined outputs of the resonators and outputs a filtered signal. The filtering method receives signals and passes them through the elements of the filter circuit to generate a filtered output signal.