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. 01, 2012
Filed:
Oct. 29, 2008
Yongtao Wang, Plano, TX (US);
Khurram Waheed, Plano, TX (US);
Sameh S. Rezeq, Dallas, TX (US);
Jaimin Mehta, Plano, TX (US);
Prasad Srinivasan, Irving, TX (US);
Khurram Muhammad, Dallas, TX (US);
Yongtao Wang, Plano, TX (US);
Khurram Waheed, Plano, TX (US);
Sameh S. Rezeq, Dallas, TX (US);
Jaimin Mehta, Plano, TX (US);
Prasad Srinivasan, Irving, TX (US);
Khurram Muhammad, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Predistortion methods and apparatus for transmitter linearization in a communication transceiver are disclosed. An example apparatus to linearize a digitally controlled pre-power amplifier included in a transmitter of a communication transceiver disclosed herein comprises a predistorter to predistort an input signal to be processed by the digitally controlled pre-power amplifier, a coupling path within the communication transceiver to couple an output of the digitally controlled pre-power amplifier to an input of a receiver included in the communication transceiver without enabling an output power amplifier stage of a multi-stage power amplifier coupled to an output of the digitally controlled pre-power amplifier, wherein no additional hardware components are required to implement the coupling path within the communication transceiver, and a predistortion evaluator comprising a predistortion calibrator and a predistortion compensator to process data demodulated by the receiver to generate and update predistortion values for use by the predistorter.