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:
Mar. 22, 2016
Filed:
Jul. 03, 2014
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Tokio Endou, Osaka, JP;
Manabu Watanabe, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03F 3/193 (2006.01); H03H 11/48 (2006.01); H03F 1/02 (2006.01);
U.S. Cl.
CPC ...
H03F 3/193 (2013.01); H03F 1/0261 (2013.01); H03H 11/48 (2013.01); H03F 2200/294 (2013.01); H03F 2200/429 (2013.01); H03F 2200/451 (2013.01);
Abstract
An amplifying circuit includes a first transistor configured to convert an input voltage signal to a current signal, a second transistor configured to convert the current signal to an output voltage signal, and a variable active inductor in which resistors and a switch are arranged between a gate and a drain of the second transistor. The amplifying circuit further includes a third transistor configured to draw a current and connected in parallel to the first transistor and a bias circuit configured to control individually a current flowing through the first transistor and a current flowing through the third transistor.