Multilayer triplexer
AssigneeMurata Manufacturing Co., Ltd.
InventorYasuhiro Nakashima
Life of this patent
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Abstract
A multilayer triplexer includes a first coil connected between a common terminal and a first filter, a second coil connected between the common terminal and a second filter, and a third coil connected between the common terminal and the third filter. The first coil, the second coil, and the third coil each include a coil conductor pattern between ones of substrate layers of a multilayer body. The coil conductor pattern of the first coil, the coil conductor pattern of the second coil, and the coil conductor pattern of the third coil do not overlap each other when the multilayer body is seen through in a direction in which the substrate layers are stacked on one another.
Claims15
A multilayer triplexer comprising:
- a multilayer body including substrate layers stacked on one another;
- a common terminal, a first branch terminal, a second branch terminal, and a third branch terminal on a surface of the multilayer body;
- a first filter, a second filter, and a third filter in the multilayer body, the first filter being connected to a path extending from the common terminal to the first branch terminal, the second filter being connected to a path extending from the common terminal to the second branch terminal, and the third filter being connected to a path extending from the common terminal to the third branch terminal;
- a first coil connected between the common terminal and the first filter;
- a second coil connected between the common terminal and the second filter;
- and
- a third coil connected between the common terminal and the third filter;
- wherein
- the first, second, and third coils each include a coil conductor pattern between ones of the substrate layers of the multilayer body;
- the coil conductor pattern of the first coil, the coil conductor pattern of the second coil, and the coil conductor pattern of the third coil do not overlap each other when the multilayer body is viewed in a direction in which the substrate layers are stacked on one another;
- the coil conductor pattern of at least one of the second and third coils includes a plurality of coil conductor patterns including a first coil conductor pattern between first ones of the substrate layers and a second coil conductor pattern between second ones of the substrate layers;
- and
- the first coil conductor pattern and the second coil conductor pattern do not coincide with each other in a width direction when the at least one of the second and third coils is viewed in the direction in which the substrate layers are stacked on one another.
Dependencies are inferred from the claim text.