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. 24, 2019
Filed:
Sep. 21, 2018
Qualcomm Incorporated, San Diego, CA (US);
Shahin Mehdizad Taleie, San Diego, CA (US);
Ashok Swaminathan, Cardiff, CA (US);
Sudharsan Kanagaraj, San Diego, CA (US);
Negar Rashidi, Irvine, CA (US);
Siyu Yang, San Diego, CA (US);
Behnam Sedighi, La Jolla, CA (US);
Honghao Ji, San Diego, CA (US);
Jaswinder Singh, San Diego, CA (US);
Andrew Weil, San Diego, CA (US);
Dongwon Seo, San Diego, CA (US);
Xilin Liu, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An interleaved digital-to-analog converter (DAC) system may include a first sub-DAC and a second sub-DAC and may be configured to provide both a converter output signal and a calibration output signal. The converter output signal may be provided by adding the first sub-DAC output signal and the second sub-DAC output signal. The calibration output signal may be provided by subtracting one of the first and second sub-DAC output signals from the other. The calibration output signal may be used as feedback to adjust the phase of one of the sub-DACs relative to the other, to promote phase matching their output signals.