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:
Nov. 24, 2015
Filed:
Sep. 09, 2013
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Inventor:
Shouhei Kousai, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/191 (2006.01); H03G 3/20 (2006.01); H03H 7/38 (2006.01); H04B 1/04 (2006.01); H03F 1/56 (2006.01);
U.S. Cl.
CPC ...
H03G 3/20 (2013.01); H03F 1/56 (2013.01); H03H 7/38 (2013.01); H04B 1/04 (2013.01);
Abstract
According to one embodiment, an amplification device includes an input terminal into which an input signal is inputted, a first amplifier, an output terminal, a variable impedance module connected at an output end of the first amplifier, a second amplifier, a reference impedance element connected at an output end of the second amplifier, a magnitude comparator, a phase comparator, and a controller. The controller is configured to control impedance of the variable impedance module so that impedance at a point between the first amplifier and the variable impedance approaches a first value.