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:
Nov. 09, 2021
Filed:
Jul. 17, 2020
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Noboru Shiokawa, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A balanced filter includes an unbalanced terminal, an unbalanced-side inductor, a first balanced terminal, a second balanced terminal, a balanced-side inductor, a power supply line, and a matching network. The unbalanced-side inductor is provided between the unbalanced terminal and a ground. The balanced-side inductor is provided between the first balanced terminal and the second balanced terminal and couples to the unbalanced-side inductor via an electromagnetic field. The power supply line includes a first end connected to a middle portion of the balanced-side inductor and a second end connected to a direct-current power supply. The matching network matches a first impedance between the first balanced terminal and the second end of the power supply line to a second impedance between the second balanced terminal and the second end of the power supply line.