US 12,407,318 B2
Filter device and high-frequency front end circuit having same mounted thereon
Akira Tanaka, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Mar. 28, 2023, as Appl. No. 18/127,149.
Application 18/127,149 is a continuation of application No. PCT/JP2021/038908, filed on Oct. 21, 2021.
Claims priority of application No. 2020-185900 (JP), filed on Nov. 6, 2020.
Prior Publication US 2023/0238936 A1, Jul. 27, 2023
Int. Cl. H03K 7/00 (2006.01); H03H 7/01 (2006.01); H03H 7/12 (2006.01); H03H 1/00 (2006.01)
CPC H03H 7/12 (2013.01) [H03H 7/1758 (2013.01); H03H 2001/0085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter device comprising:
a body;
a first filter with a first pass band; and
a second filter with a second pass band different from the first pass band; wherein
as seen in plan view in a normal direction of the body, an inductor included in the first filter is in a first range, and an inductor included in the second filter is in a second range adjacent to the first range;
each of the first filter and the second filter includes at least one inductor;
the at least one inductor included in the first filter is a vertical coil which includes a plate electrode and a via extending in the normal direction of the body;
in the second filter, the at least one inductor facing the first range is a planar coil with a winding axis extending in the normal direction of the body; and
as seen in plan view in the normal direction of the body, an imaginary line does not intersect with the at least one inductor included in the second filter, the imaginary line being drawn from an extending-direction center of the plate electrode of the first filter in a direction perpendicular or substantially perpendicular to the extending direction.