Patents by Inventor Xiaoyan Gui

Xiaoyan Gui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High-speed CMOS ring voltage controlled oscillator with low supply sensitivity
    Patent number: 9319031
    Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: April 19, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael M. Green, Xiaoyan Gui
  • HIGH-SPEED CMOS RING VOLTAGE CONTROLLED OSCILLATOR WITH LOW SUPPLY SENSITIVITY
    Publication number: 20140292420
    Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael M. Green, Xiaoyan Gui
  • High-speed CMOS ring voltage controlled oscillator with low supply sensitivity
    Patent number: 8692622
    Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 8, 2014
    Assignee: The Regents of the University of California
    Inventors: Michael M. Green, Xiaoyan Gui
  • HIGH-SPEED CMOS RING VOLTAGE CONTROLLED OSCILLATOR WITH LOW SUPPLY SENSITIVITY
    Publication number: 20120119836
    Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.
    Type: Application
    Filed: September 19, 2011
    Publication date: May 17, 2012
    Inventors: Michael M. Green, Xiaoyan Gui