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. 03, 2012
Filed:
Aug. 18, 2008
Khurram Waheed, Plano, TX (US);
Seydou N. BA, Richardson, TX (US);
Khurram Waheed, Plano, TX (US);
Seydou N. Ba, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A Cartesian transmitter and a method of linearizing a Cartesian transmitter. In one embodiment, the transmitter includes: (1) a transmit chain configured to receive an input signal having in-phase and quadrature components and having a predistorter configured to employ at least one compensation lookup table to carry out in-phase and quadrature compensation predistortion with respect to the input signal, a combiner configured to combine outputs of the predistorter and a nonlinear element configured to process an output of the combiner, (2) a receiver coupled to the transmit chain and (3) predistortion compensation circuitry associated with the receiver and configured to update the at least one compensation lookup table based on the input signal and a signal from the receiver.