Patents by Inventor Leycheoh Lim

Leycheoh Lim 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).

  • Systems and methods for calibrating power regulated communication circuitry
    Patent number: 7890132
    Abstract: Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 15, 2011
    Assignee: Marvell International Ltd.
    Inventors: George Chien, King Chun Tsai, Sang Won Son, Alireza Shirvani Mahdavi, Qiong Sun, Leycheoh Lim
  • SYSTEMS AND METHODS FOR CALIBRATING POWER REGULATED COMMUNICATION CIRCUITRY
    Publication number: 20100220243
    Abstract: Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.
    Type: Application
    Filed: May 7, 2010
    Publication date: September 2, 2010
    Applicant: Marvell International Ltd.
    Inventors: George Chien, King Chun Tsai, Sang Won Son, Alireza Shirvani-Mahdavi, Qiong Sun, Leycheoh Lim
  • Systems and methods for calibrating power regulated communication circuitry
    Patent number: 7738904
    Abstract: Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: June 15, 2010
    Assignee: Marvell International Ltd.
    Inventors: George Chien, King Chun Tsai, Sang Won Son, Alireza Shirvani-Mahdavi, Qiong Sun, Leycheoh Lim