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. 18, 2001
Filed:
Jun. 22, 2000
Deepnarayan Gupta, Hawthorne, NY (US);
Yongming Zhang, San Diego, CA (US);
Other;
Abstract
One aspect of the invention is directed to on-chip high-frequency, low-jitter clock circuits including long Josephson junction (LJJ) oscillators usable as clock sources. LJJ oscillators embodying the invention may be formed using either “linear” or “annular” long Josephson junctions. This invention enables the generation and distribution of a stable high-frequency on-chip single flux quantum (SFQ) clock. The on-chip clock circuit may include a clock selector circuit and a clock distribution scheme and may be integrated with RSFQ circuits and/or with a wideband analog-to-digital converter (ADC) comparator. The invention also includes a new fluxon “sender” circuit suitable for synchronizing the LJJ oscillator with another oscillator, either on-chip or external to the chip. The new sender circuit may also enable the realization of a novel phase-locked loop (PLL) circuit.