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.

Date of Patent:
Sep. 15, 2026

Filed:

Aug. 11, 2023
Applicant:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Inventor:

Yuri Honda, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/195 (2006.01); H03F 1/02 (2006.01); H03F 1/30 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H03F 1/302 (2013.01); H03F 1/0222 (2013.01); H03F 3/211 (2013.01); H03F 3/245 (2013.01); H03F 2200/318 (2013.01); H03F 2200/451 (2013.01); H03F 2200/555 (2013.01);
Abstract

A bias circuit includes: a first transistor having an emitter or a source which supplies a bias to an amplifier operating by a power source voltage through a first resistive element and a base or a gate; a first capacitor having a first end electrically connected to the base or the gate of the first transistor and a second end connected to a ground; and a second transistor having a collector or a drain electrically connected to the base or the gate of the first transistor, a base or a gate electrically connected to the base or the gate of the first transistor, and an emitter or a source connected to a node which is supplied with a signal with experience of being amplified by the amplifier and the power source voltage.


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