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. 31, 2023
Filed:
Nov. 30, 2018
Ciena Corporation, Hanover, MD (US);
Sadok Aouini, Gatineau, CA;
Matthew Mikkelsen, Ottawa, CA;
Naim Ben-Hamida, Ottawa, CA;
Mahdi Parvizi, Kanata, CA;
Tingjun Wen, Ottawa, CA;
Calvin Plett, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
A circuit includes a programmable frequency divider which receives a high-speed clock, f, as an input and which provides a modulated reference clock as an output; a Sigma-Delta modulator which receives a Frequency Control Word (FCW) and which is connected to the programmable frequency divider to receive the modulated reference clock as a sample clock and to control an average frequency of the modulated reference clock; and an integer-N Phase Lock Loop (PLL) which receives the modulated reference clock and outputs a clock output.