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:
Apr. 17, 2018
Filed:
Jun. 30, 2017
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventors:
Makoto Tabei, Kyoto, JP;
Daisuke Watanabe, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 1/00 (2006.01); H03F 1/22 (2006.01); H03F 1/30 (2006.01); H03F 1/56 (2006.01);
U.S. Cl.
CPC ...
H03G 1/0035 (2013.01); H03F 1/223 (2013.01); H03F 1/301 (2013.01); H03F 1/56 (2013.01); H03F 2200/18 (2013.01); H03F 2200/222 (2013.01); H03F 2200/294 (2013.01); H03F 2200/387 (2013.01);
Abstract
Provided is an amplification circuit that amplifies an input signal and outputs an amplified signal. The amplification circuit includes: an amplification element that outputs the amplified signal from an output terminal thereof; an inductor having one end to which a power supply voltage is supplied and another end that is connected to the output terminal of the amplification element; a variable resistor that is connected in parallel with the inductor; and a resistance value adjusting circuit that adjusts a resistance value of the variable resistor in accordance with the temperature.