Acoustic wave bandpass filter comprising integrated acoustic guiding

摘要

An acoustic wave bandpass filter comprises at least an input first acoustic wave resonator with an output surface, and an output second acoustic wave resonator with an input surface, said resonators being coupled to each other along a set direction, the input and output surfaces being substantially opposite, and at least one first phononic crystal structure between said input and output resonators and/or a second phonic crystal structure at the periphery of said resonators so as to guide the acoustic waves, generated by said input resonator, toward said output resonator along said set direction, the resonators ensuring an impedance conversion and/or a mode conversion.

主权项

1. An acoustic wave bandpass filter comprising:
an input acoustic wave resonator with an output surface; a first output acoustic wave resonator with an input surface, the first output acoustic wave resonator being coupled to the input acoustic wave resonator along a set direction; and at least one first phononic crystal structure between the input acoustic wave resonator and the first output acoustic wave resonator; and a second phononic crystal structure at the periphery of the input acoustic wave resonator and the output acoustic wave resonator so as to guide acoustic waves generated by the input acoustic wave resonator toward the first output acoustic wave resonator along the set direction, and wherein the input surface is substantially opposite to the output surface, wherein the acoustic waves are guided along the set direction and the input acoustic wave resonator and the first output acoustic wave resonator ensure at least one of a mode conversion and an impedance conversion.