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:
Dec. 31, 2013
Filed:
Jan. 26, 2010
Hiroyoshi Ishikawa, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A predistorter includes a distortion compensating unit which gives, in advance, a reverse characteristic of a characteristic of input to output of a power amplifier to a transmission signal which is to be input to the power amplifier; a distortion compensation signal generating unit which generates a distortion compensation signal indicating the reverse characteristic based on transmission data that is sample data of the transmission signal and the delayed transmission data; and a delay amount control unit which controls a delay amount of the transmission data according to an output signal of the power amplifier.