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:
May. 04, 2004
Filed:
Feb. 06, 2002
David J. Hedberg, Menlo Park, CA (US);
James A. Sills, Scottsdale, AZ (US);
Eric M. Brombaugh, Mesa, AZ (US);
Intersil Americas, Inc., Scottsdale, AZ (US);
Abstract
A power amplifier linearizer ( ) includes an on-chip portion ( ) and an external controller ( ). The on-chip portion ( ) implements two predistortion circuits ( ) desirably configured as look-up tables. One predistortion circuit ( ) is programmed by the external controller ( ) to apply a hotter linearizing translation function ( ) and the other predistortion circuit ( ) is programmed by the external controller ( ) to apply a colder linearizing translation function ( ). One or more temperature signals ( ) are correlated with the temperatures experienced by a power amplifier ( ) and drive a power amplifier thermal modeler ( ) implemented in the controller ( ). As a result of running the thermal modeler ( ), the controller ( ) generates an interpolation signal ( ) that indicates how far to interpolate between the hotter and colder translation functions ( ).