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:
Jan. 29, 2013
Filed:
Mar. 10, 2010
Yoshinobu Shizawa, Kawasaki, JP;
Hiroaki Maeda, Kawasaki, JP;
Yousuke Okazaki, Kawasaki, JP;
Hirotake Honda, Kawasaki, JP;
Yoshinobu Shizawa, Kawasaki, JP;
Hiroaki Maeda, Kawasaki, JP;
Yousuke Okazaki, Kawasaki, JP;
Hirotake Honda, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An amplifying device includes an amplifier including a first amplifying element with a drain voltage thereof being controlled, and a second amplifying element, the amplifier amplifying a transmission signal with the first and second amplifying elements, synthesizing the transmission signals amplified by the first and second amplifying elements, and outputting the synthesized transmission signal; a distortion compensator part which performs distortion compensation on the input signal in accordance with a compensation coefficient derived from a difference between a input signal and a feedback signal generated from a portion of a signal output from the amplifier; and a controller part which controls the drain voltage of the first amplifying element in response to a result of a comparison between a power level of the input signal prior to the distortion compensation operation by the distortion compensator part and a threshold value.