Acoustic wave filter

An acoustic wave filter comprising:

• at least three segmented resonator devices connected in series to one another and aligned in a direction that crosses an acoustic wave propagation direction;
• wherein
• each of the at least three segmented resonator devices includes an InterDigital Transducer (IDT) electrode;
• centers of respective IDT electrodes of an adjacent pair of the at least three segmented resonator devices in the acoustic wave propagation direction are not aligned when seen from a direction orthogonal to the acoustic wave propagation direction;
• the first segmented resonator device includes at least two segmented resonators that are connected in parallel to one another;
• the at least two segmented resonators of the first segmented resonator device are aligned in the acoustic wave propagation direction;
• the second segmented resonator device includes at least two segmented resonators that are connected in parallel to one another;
• the at least two segmented resonators of the second segmented resonator device are aligned in the acoustic wave propagation direction;
• and
• a ratio between lengths in the acoustic wave propagation direction of the respective IDT electrodes included in the at least two segmented resonators of the first segmented resonator device is different from a ratio between lengths in the acoustic wave propagation direction of the respective IDT electrodes included in the at leasttwo segmented resonators of the second segmented resonator device --.