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:
Apr. 04, 2000
Filed:
Apr. 08, 1998
Charles R Gentzler, Thousand Oaks, CA (US);
Powerwave Technologies, Inc., Irvine, CA (US);
Abstract
The invention relates to an amplifier arrangement for amplifying an input using a distorting main power amplifier such as one operating as a class AB amplifier. The method and apparatus add to the input signal to the main amplifier a predistortion signal intended to compensate for the distortion added by the main power amplifier. In accordance with the invention, the predistortion signals can be dynamically modified to improve, substantially, at least the third order intermodulation components in the output of the power amplifier. A digitally controlled processor iteratively modifies various phase and gain controls to adjust the output of the amplifier. Different gain and phase control lines are iteratively updated at different rates.