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. 08, 2013
Filed:
Sep. 15, 2009
Takayuki Kato, Kawasaki, JP;
Atsushi Yamaoka, Kawasaki, JP;
Keiichi Yamaguchi, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A distortion compensator for reducing a level of a distortion component included in an output analog signal of an amplifier, includes: an A/D converter to convert the output analog signal of the amplifier into a digital output signal; a comparator to generate a distortion characteristic of the amplifier based on a digital input signal and the digital output signal; a rate controller to control a sampling rate of the A/D converter based on the digital input signal and the digital output signal; a predistorter to multiply the digital input signal and a compensation value for compensating the amplifier, the compensation value being calculated based on the digital input signal and the distortion characteristic of the amplifier; and a D/A converter to convert multiplication result of the predistorter into an analog input signal to input the analog input signal to the amplifier.