The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2025
Filed:
Feb. 27, 2023
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Yuta Ashida, Tokyo, JP;
Masahiro Tatematsu, Tokyo, JP;
Shuhei Sawaguchi, Tokyo, JP;
Keigo Shibuya, Tokyo, JP;
Tetsuzo Goto, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/20 (2006.01); H01P 1/207 (2006.01); H01P 7/06 (2006.01);
U.S. Cl.
CPC ...
H01P 1/207 (2013.01); H01P 1/20 (2013.01); H01P 7/06 (2013.01);
Abstract
A filter circuit includes two ports, a first resonant circuit, and a second resonant circuit. The first resonant circuit is provided between the two ports in a circuit configuration and coupled with both of the two ports. The second resonant circuit is provided between the two ports in the circuit configuration and coupled with at least one of the two ports. Coupling of the second resonant circuit and the two ports is weaker than coupling of the first resonant circuit and the two ports.