US 12,407,316 B2
Multilayered filter device
Arata Yamamoto, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Mar. 7, 2023, as Appl. No. 18/179,600.
Claims priority of application No. 2022-047842 (JP), filed on Mar. 24, 2022.
Prior Publication US 2023/0327631 A1, Oct. 12, 2023
Int. Cl. H03H 7/01 (2006.01); H03H 7/09 (2006.01); H03H 1/00 (2006.01)
CPC H03H 7/0115 (2013.01) [H03H 7/09 (2013.01); H03H 7/1791 (2013.01); H03H 2001/0085 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A multilayered filter device comprising:
a first port;
a second port;
a first LC resonator electrically connected to the first port;
a second LC resonator electrically connected to the second port;
a third LC resonator provided between the first LC resonator and the second LC resonator in a circuit configuration; and
a stack that includes a plurality of dielectric layers stacked together, and that is configured to integrate the first port, the second port, the first LC resonator, the second LC resonator, and the third LC resonator, wherein
the first LC resonator includes a first inductor that is electrically connected to the first port via a conductor and is not directly connected to a ground,
the second LC resonator includes a second inductor that is electrically connected to the second port via a conductor and is not directly connected to the ground, and
the first inductor and the second inductor are configured to be magnetically coupled inside the stack.