Patent ID: 11909382
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multiplexer comprising:
a first common terminal, a first input/output terminal, and a second input/output terminal;
a first filter that is connected between the first common terminal and the first input/output terminal;
a second filter that is connected between the first common terminal and the second input/output terminal, the second filter having a passband that is different than a passband of the first filter; and
an impedance matching circuit that is between the first common terminal and the second filter,
wherein the impedance matching circuit comprises a first acoustic wave resonator that is in series on a path connecting the first common terminal to the second filter,
wherein the second filter comprises an acoustic wave resonator, and
wherein the impedance matching circuit further comprises a first inductor that is between the first common terminal and the first acoustic wave resonator, and that is connected to the first acoustic wave resonator in series.