Patent ID: 11863161
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic wave filter comprising:
a first resonance circuit including a first series arm resonator and a first capacitive element, the first series arm resonator being provided on a path connecting a first terminal and a second terminal, the first capacitive element being coupled in parallel with the first series arm resonator; wherein
the first series arm resonator includes a first divided resonator and a second divided resonator coupled in series with each other;
the first resonance circuit includes a second resonance circuit including the first divided resonator and a second capacitive element coupled in parallel with the first divided resonator, one terminal of the second capacitive element being coupled to one node between the first divided resonator and the second divided resonator, and another terminal of the second capacitive element being coupled to another node at the opposite side to the one node from the first divided resonator; and
no capacitive element is coupled in parallel with the second divided resonator.