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:
Jun. 03, 2025
Filed:
Jan. 31, 2023
Tdk Corporation, Tokyo, JP;
Masahiro Tatematsu, Tokyo, JP;
Shuhei Sawaguchi, Tokyo, JP;
Yuta Ashida, Tokyo, JP;
Tetsuzo Goto, Tokyo, JP;
Yoshinori Matsumaru, Tokyo, JP;
Shigemitsu Tomaki, Tokyo, JP;
Longfei Yi, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A filter circuit includes a pair of balanced input ports, a pair of balanced output ports, first and second resonators provided in parallel between the pair of balanced input ports and the pair of balanced output ports in a circuit configuration, a first capacitor connected in parallel to the first resonator, and a second capacitor connected in parallel to the second resonator. The first and second resonators are magnetically coupled to each other and electrically connected to each other. The first and second capacitors are not electrically connected to ground.