BANDPASS FILTER CIRCUIT

原文（中国語）

The present disclosure provides a bandpass filter circuit. An example band pass filter circuit comprises, in series, a first high-pass filter, a bandpass filter, and a second high-pass filter. The bandpass filter comprises: first and second acoustic resonators serially disposed between first and second nodes; two first coils disposed in series with each other, and disposed in parallel to the first acoustic resonator; two second coils disposed in series with each other, and disposed in parallel to the second acoustic resonator; a third acoustic resonator disposed between a third mid-node between the first coils and a fourth node; and a fourth acoustic resonator disposed between a fifth mid-node between the second coils and the fourth node.