Multiplexer
AssigneeMurata Manufacturing Co., Ltd.
InventorMotoki Ozasa
Life of this patent
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Abstract
A multiplexer includes a common terminal, an inductor including a first end connected to the common terminal and a second end, a filter connected to the second end and having a first pass band, a filter connected to the common terminal and having a second pass band located on a higher frequency side relative to the first pass band, an inductor connected between a ground and a path that links the second end to the filter, and a capacitor connected between the path and the ground. A resonant frequency of an LC parallel resonance circuit including the inductor and the capacitor is located between the first pass band and the second pass band.
Claims18
A multiplexer comprising:
- a common terminal;
- a first inductance element including a first end connected to the common terminal and a second end;
- a first acoustic wave filter invariably connected to the second end and having a first pass band;
- a second acoustic wave filter connected to the common terminal and having a second pass band located on a higher frequency side relative to the first pass band;
- a second inductance element connected between a ground and a path that links the second end to the first acoustic wave filter;
- and
- a capacitance element connected between the path and the ground;
- wherein
- a resonant frequency of a resonance circuit including the second inductance element and the capacitance element is located between the first pass band and the second pass band.
Dependencies are inferred from the claim text.