An acoustic wave device includes an input I-terminal and an input Q-terminal to respectively receive an I signal and a Q signal with a phase difference of about 90, an output terminal, an acoustic wave phase shift circuit connected between the input I-terminal and the output terminal, including an acoustic wave resonator, and to adjust a phase of the I signal, an acoustic wave phase shift circuit connected between the input Q-terminal and the output terminal, including an acoustic wave resonator, and to adjust a phase of the Q signal, and a phase compensator connected to at least one of between the input I-terminal and the acoustic wave phase shift circuit, between the input Q-terminal and the acoustic wave phase shift circuit, between the output terminal and the acoustic wave phase shift circuit, and between the output terminal and the acoustic wave phase shift circuit.

Aspects of this disclosure relate to acoustic wave filters that include different types of acoustic wave resonators for series resonators and shunt resonators. In certain embodiments, an acoustic filter component includes a first die including surface acoustic wave resonators and a second die including bulk acoustic wave resonators. An interdigital transducer electrode of a surface acoustic wave resonator can be a side of the first die. An electrode of a bulk acoustic wave resonator can be on a side of the second die facing the side of the first die with the interdigital transducer electrode thereon. An acoustic wave filter can include series resonators on one of the first and second die and shunt resonators on the other of the first and second die.

Aspects of this disclosure relate to acoustic wave filters that include different types of acoustic wave resonators for series resonators and shunt resonators. In certain embodiments, an acoustic filter component includes a first die including surface acoustic wave resonators and a second die including bulk acoustic wave resonators. An interdigital transducer electrode of a surface acoustic wave resonator can be a side of the first die. An electrode of a bulk acoustic wave resonator can be on a side of the second die facing the side of the first die with the interdigital transducer electrode thereon. An acoustic wave filter can include series resonators on one of the first and second die and shunt resonators on the other of the first and second die.