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:
Nov. 30, 2010
Filed:
Jul. 07, 2006
Arvind Keerthi, Bangalore, IN;
Madabusi Govindarajan, Bangalore, IN;
P. Vijay Kumar, Bangalore, IN;
John Choma, San Dimas, CA (US);
Abhijit Shanbhag, Sunnyvale, CA (US);
Arvind Keerthi, Bangalore, IN;
Madabusi Govindarajan, Bangalore, IN;
P. Vijay Kumar, Bangalore, IN;
John Choma, San Dimas, CA (US);
Abhijit Shanbhag, Sunnyvale, CA (US);
Scintera Networks, Inc., Sunnyvale, CA (US);
Abstract
Pre-distortion apparatuses and methods for a non-linear component are provided. The apparatus comprises an adaptive block for generating a plurality of correlation coefficients, which are used to weight a plurality of synthesis work functions to pre-distort a given signal. The adaptive block can be driven by an error signal generated from a feedback signal from the non-linear component output signal and a delayed version of the input signal. The apparatus is capable of being operated directly at radio frequency. Also provided are apparatuses and methods for generation of quadrature signals, transconductance amplification employing negative resistance, variable-gain amplification, and envelope detection.