Multiplexer
AssigneeMurata Manufacturing Co., Ltd.
InventorYuichi Takamine
Life of this patent
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Abstract
A multiplexer includes a common connection terminal on a first surface of a substrate and to be connected to an antenna element, and transmission-side and reception-side elastic wave filters of Band25 and Band66 mounted on a second surface of the substrate opposite the first surface, that are connected to the common connection terminal, and that have pass bands different from each other. The transmission-side elastic wave filter of Band66 is located nearest on the substrate to the common connection terminal among the elastic wave filters.
Claims18
A multiplexer that transmits and receives high-frequency signals via an antenna element, the multiplexer comprising:
- a substrate including a first surface and a second surface opposite the first surface;
- a common connection terminal that is disposed on the first surface of the substrate and that is to be connected to the antenna element;
- and
- at least three elastic wave filters that are mounted on the second surface of the substrate, that are connected to the common connection terminal, and that have pass bands different from each other;
- wherein
- a first elastic wave filter of the at least three elastic wave filters, which generates a spurious wave at a frequency that is included in a pass band of a second elastic wave filter that is at least one of the elastic wave filters that differs from the first elastic wave filter among the at least three elastic wave filters, is located nearest on the substrate to the common connection terminal among the at least three elastic wave filters.
Dependencies are inferred from the claim text.