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:
Apr. 09, 2018
Applicant:
Ciena Corporation, Hanover, MD (US);
Inventors:
Assignee:
Ciena Corporation, Hanover, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/013 (2006.01); H03L 7/083 (2006.01); G01R 29/26 (2006.01); G01R 31/317 (2006.01); H03L 7/099 (2006.01);
U.S. Cl.
CPC ...
H03K 3/013 (2013.01); G01R 29/26 (2013.01); G01R 31/31709 (2013.01); H03L 7/083 (2013.01); H03L 7/0995 (2013.01); H03B 2201/02 (2013.01);
Abstract
Digital jitter accumulation reduction techniques and circuits are proposed to mitigate jitter accumulation in Voltage Controlled Oscillators (VCOs). In order to reduce jitter accumulation, employing a pair of identical injection locked VCOs is proposed in an interleaved fashion. Further jitter accumulation reductions can be provided by employing a plurality of identical injection locked VCOs selected in a cascading fashion. Yet further jitter accumulation reductions can be provided by resetting the deselected VCO(s).