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:
Oct. 10, 2023
Filed:
Jun. 10, 2020
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventors:
Satoshi Tanaka, Kyoto, JP;
Masatoshi Hase, Kyoto, JP;
Norio Hayashi, Kyoto, JP;
Kazuo Watanabe, Kyoto, JP;
Yuuri Honda, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/191 (2006.01); H03F 1/02 (2006.01); H03F 3/21 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03F 3/195 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0205 (2013.01); H03F 1/565 (2013.01); H03F 3/19 (2013.01); H03F 3/195 (2013.01); H03F 3/21 (2013.01); H03F 3/245 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01);
Abstract
A power amplifier circuit includes an amplifier that receives an input signal with an alternating current and outputs an output signal obtained by amplifying power of the input signal to a first node; an inductive element that is connected between the first node and a second node; and a variable capacitor that is connected between the second node and a reference potential, and whose electrostatic capacitance increases as power of the output signal increases.