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:
Dec. 28, 2021
Filed:
Mar. 19, 2020
Murata Manufacturing Co., Ltd., Kyoto, JP;
Hideyuki Satou, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A power amplifying circuit includes a bias circuit that supplies a bias current or a bias voltage to a base of a first transistor, and at least one termination circuit that short-circuits a second-order harmonic of an amplified signal output from a collector of the first transistor to a ground voltage. An emitter of the first transistor is connected to ground. The bias circuit includes a second transistor. A collector of the second transistor is connected to the base of the first transistor. An emitter of the second transistor is connected to the emitter of the first transistor. A base of the second transistor is supplied with a predetermined voltage.