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:
Oct. 20, 2015
Filed:
Dec. 19, 2014
Wolfgang Klippel, Dresden, DE;
Wolfgang Klippel, Dresden, DE;
Other;
Abstract
The invention relates to an arrangement and a method for the identification of parameters in a nonlinear model of an analog-to-digital converter (ADC) and the use of this information to reduce the nonlinear distortions of the ADC. A parameter estimator determines an AD parameter vector Pwhich describes the nonlinearities of the ADC (). According to the invention the ADC is excited by a perturbed input signal y'generated by adderwhich combines the analog input signal ywith perturbation signal sprovided by generator. The nonlinear system identification uses intermodulation distortion generated in the digital ADC output signal y′which are not found in the analog input signal y. A nonlinear AD compensation element compensates based on parameter vector Pthe nonlinear distortion generated by the ADC and generates the linearized output signal y. Digital control information Pare used to generate the perturbation signal sin generator and to remove the perturbation signal the compensation element. The linearized ADC (is the basis for linearizing digital-analog-converters (DAC), amplifiers and other hardware components.