US 12,355,417 B2
Filter
Naoyuki Mori, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Feb. 10, 2023, as Appl. No. 18/167,473.
Claims priority of application No. 2022-024551 (JP), filed on Feb. 21, 2022.
Prior Publication US 2023/0268902 A1, Aug. 24, 2023
Int. Cl. H03H 7/01 (2006.01); H03H 1/00 (2006.01)
CPC H03H 7/0115 (2013.01) [H03H 7/0161 (2013.01); H03H 7/1775 (2013.01); H03H 2001/0085 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A filter comprising:
a first port;
a second port; and
at least one high-pass filter provided between the first port and the second port in a circuit configuration, wherein
the at least one high-pass filter includes a three first capacitive elements connected to a path connecting the first port and the second port, the three first capacitive elements being connected to one another, an inductor provided between the path and ground, and a second capacitive element connected in parallel with the inductor,
wherein a first resonance frequency of a circuit including the inductor and at least one capacitor that corresponds to the three first capacitive elements and a second resonance frequency of a circuit including the inductor and the second capacitive element are different from each other.