Patent ID: 11876505
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The acoustic wave filter device according to claim 1, wherein
each IDT electrode of the at least one first IDT electrode includes a first region in which electrode fingers are provided with a first pitch therebetween and a second region in which electrode fingers are provided with a second pitch therebetween, which is shorter than the first pitch;
each IDT electrode of the at least one second IDT electrode includes a third region in which electrode fingers are provided with a third pitch therebetween and a fourth region in which electrode fingers are provided with a fourth pitch therebetween, which is shorter than the third pitch;
the second region faces the fourth region; and
a number of electrode fingers adjacent to each other with the second pitch therebetween in the second region is smaller than a number of electrode fingers adjacent to each other with the fourth pitch therebetween in the fourth region.