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:
Dec. 26, 2017
Filed:
Feb. 25, 2015
Applicant:
Qualcomm, Incorporated, San Diego, CA (US);
Inventors:
Mohammadhossein Naderi Alizadeh, College Station, TX (US);
Shahin Mehdizad Taleie, San Diego, CA (US);
Dongwon Seo, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/68 (2006.01); H03M 3/00 (2006.01); H03M 7/30 (2006.01); H03M 1/06 (2006.01); H03M 1/00 (2006.01);
U.S. Cl.
CPC ...
H03M 1/0626 (2013.01); H03M 1/002 (2013.01); H03M 1/687 (2013.01); H03M 3/368 (2013.01); H03M 3/502 (2013.01); H03M 7/3042 (2013.01);
Abstract
In one embodiment, a method for converting an input digital signal into an analog signal is provided. The method comprises modulating the input digital signal into a modulated digital signal, and converting the modulated digital signal into the analog signal using a digital-to-analog converter (DAC). The modulation shapes quantization noise of the DAC to place a notch at a frequency within an out-of-bound frequency band to reduce the quantization noise within the out-of-bound frequency band.