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:
Jun. 09, 2020
Filed:
Sep. 12, 2018
Applicant:
Analog Devices Global Unlimited Company, Hamilton, BM;
Inventors:
Niall Kevin Kearney, Killeagh, IE;
Philip Eugene Quinlan, Glounthaune, IE;
Assignee:
Analog Devices Global Unlimited Company, Hamilton, BM;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/093 (2006.01); H03L 7/197 (2006.01); H03C 3/09 (2006.01); H03L 7/087 (2006.01);
U.S. Cl.
CPC ...
H03L 7/093 (2013.01); H03C 3/0925 (2013.01); H03C 3/0933 (2013.01); H03L 7/087 (2013.01); H03L 7/197 (2013.01);
Abstract
This disclosure relates to fractional-N phase-locked loops. A digital filter can filter out quantization noise from a modulator. Separate paths can process an integer part associated with an output signal of the digital filter and a fractional part associated with the output signal of the digital filter. The separate paths can be combined in the fractional-N phase-locked loop, for example, as a weighted sum.