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. 11, 2026
Filed:
Jul. 28, 2023
Murata Manufacturing Co., Ltd., Kyoto, JP;
Shingo Yanagihara, Kyoto, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A power amplifier includes an amplifier circuit configured to amplify a radio frequency input signal, a bias circuit configured to output a bias current to the amplifier circuit, and a bias suppression circuit configured to suppress the bias current based on the radio frequency input signal. The bias circuit includes a first transistor including a collector and a base that are electrically connected to a first node to be input with a current and an emitter electrically connected to a second node, a second transistor including a collector and a base that are electrically connected to the second node, and a third transistor including a base electrically connected to the first node and an emitter, the third transistor being configured to output a bias current from the emitter. The bias suppression circuit draws a current from the second node of the bias circuit based on the radio frequency input signal.