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:
Jan. 21, 2020
Filed:
Feb. 25, 2019
International Business Machines Corporation, Armonk, NY (US);
Marcel A. Kossel, Reichenburg, CH;
Pier Andrea Francese, Adliswil, CH;
Thomas H. Toifl, Gattikon, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A bang-bang phase detector includes set-reset latch, pulse generator, flip-flop, and pulse-width extension circuits. The set-reset latch circuit has set and reset inputs receiving input signals, and a latch output providing a latch output signal whose state varies in dependence on phases of the input signals. The pulse generator circuit generates sampling pulses at timings dependent on phase of an input signal. The flip-flop circuit has a data input, a clock input connected to the pulse generator circuit receiving the sampling pulses, and an output providing a detector output signal whose state distinguishes positive and negative phase differences between input signals. The pulse-width extension circuit connects between the latch output and data input of the flip-flop circuit, and extends width of pulses of a polarity in the latch output signal to extend range of input signal phase differences over which the detector output signal distinguishes positive and negative phase differences.