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. 29, 2013
Filed:
Dec. 25, 2011
Michael A. Ashburn, Jr., Groton, MA (US);
Jeffrey Carl Gealow, Andover, MA (US);
Paul F. Ferguson, Jr., North Andover, MA (US);
Michael A. Ashburn, Jr., Groton, MA (US);
Jeffrey Carl Gealow, Andover, MA (US);
Paul F. Ferguson, Jr., North Andover, MA (US);
MediaTek Singapore Pte. Ltd., Singapore, SG;
Abstract
An apparatus includes a clock source and an oversampled continuous-time digital-to-analog converter. Noise signal is added to the clock signal as the clock signal is generated and/or routed. The oversampled continuous-time digital-to-analog converter includes a sigma-delta modulator to perform noise shaping on input data samples and provide intermediate data samples; a filter to filter the intermediate data samples and generate filtered samples, the filter having a transfer function that has a stop band at a frequency range that includes the frequency of the noise signal or a component of the noise signal; and a continuous-time digital-to-analog converter to convert the filtered samples to an output analog signal.