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:
Sep. 17, 2013
Filed:
Dec. 28, 2012
Guzik Technical Enterprises, Mountain View, CA (US);
Anatoli B. Stein, Atherton, CA (US);
Semen P. Volfbeyn, Palo Alto, CA (US);
Guzik Technical Enterprises, Mountain View, CA (US);
Abstract
An interleaved analog to digital converter with digital equalization includes a conversion-measurement-equalization unit and residual distortions reduction unit, and is operative in a calibration mode and converter mode. The conversion-measurement-equalization unit includes a composite ADC containing N sub-ADCs, equalizer, responses measurement unit and a coefficients calculator. The residual distortions reduction unit uses received measured frequency responses and equalizer coefficients, both from the conversion-measurement-equalization unit, as a base to calculate corrected frequency responses that are applied to the coefficients calculator for generation of equalizer coefficients for application to the equalizer. A residual distortions calculator of the residual distortions reduction unit, is responsive to measured frequency responses from the composite ADC and a current set of equalizer coefficients applied to the equalizer, to calculate residual frequency distortions that should have been expected to appear in the output signal of the ADC system if the current equalizer coefficients remain applied to the equalizer.