Patents by Inventor Hamid R. Safiri

Hamid R. Safiri 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).

  • Patent number: 9742418
    Abstract: A phase look loop (PLL) device has a dynamic lock range that is based on a temperature measured during a calibration process. The PLL device includes a calibration circuit configured to receive a temperature reading corresponding to a junction temperature of the PLL device during the calibration process. Based on this temperature reading, the calibration circuit initiates a preset procedure that presets a control voltage of a voltage control oscillator in the PLL device. The preset procedure implements a calibration function defined by a slope with a numerator component and a denominator component. The numerator component corresponds to a range of the control voltage, whereas the denominator component corresponds to a range of ambient temperatures within which the PLL device operates.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 22, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Aaron L. Frank, Hamid R. Safiri
  • Publication number: 20170047934
    Abstract: A phase look loop (PLL) device has a dynamic lock range that is based on a temperature measured during a calibration process. The PLL device includes a calibration circuit configured to receive a temperature reading corresponding to a junction temperature of the PLL device during the calibration process. Based on this temperature reading, the calibration circuit initiates a preset procedure that presets a control voltage of a voltage control oscillator in the PLL device. The preset procedure implements a calibration function defined by a slope with a numerator component and a denominator component. The numerator component corresponds to a range of the control voltage, whereas the denominator component corresponds to a range of ambient temperatures within which the PLL device operates.
    Type: Application
    Filed: October 27, 2016
    Publication date: February 16, 2017
    Inventors: Aaron L. Frank, Hamid R. Safiri
  • Patent number: 9520884
    Abstract: A phase look loop (PLL) device has a dynamic lock range that is based on a temperature measured during a calibration process. The PLL device includes a calibration circuit configured to receive a temperature reading corresponding to a junction temperature of the PLL device during the calibration process. Based on this temperature reading, the calibration circuit initiates a preset procedure that presets a control voltage of a voltage control oscillator in the PLL device. The preset procedure implements a calibration function defined by a slope with a numerator component and a denominator component. The numerator component corresponds to a range of the control voltage, whereas the denominator component corresponds to a range of ambient temperatures within which the PLL device operates.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: December 13, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Aaron L. Frank, Hamid R. Safiri
  • Publication number: 20160036453
    Abstract: A phase look loop (PLL) device has a dynamic lock range that is based on a temperature measured during a calibration process. The PLL device includes a calibration circuit configured to receive a temperature reading corresponding to a junction temperature of the PLL device during the calibration process. Based on this temperature reading, the calibration circuit initiates a preset procedure that presets a control voltage of a voltage control oscillator in the PLL device. The preset procedure implements a calibration function defined by a slope with a numerator component and a denominator component. The numerator component corresponds to a range of the control voltage, whereas the denominator component corresponds to a range of ambient temperatures within which the PLL device operates.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 4, 2016
    Inventors: Aaron L. Frank, Hamid R. Safiri
  • Patent number: 7742747
    Abstract: An integrated automatic IIP2 calibration architecture for wireless transceivers is disclosed. The architecture enables a wireless transceiver to generate a test radio frequency (RF) signal having a second order tone with minimal additional circuitry. In particular, the test RF signal is generated using a combination of native transceiver circuits and test adaptor circuits. Native transceiver circuits are those circuits implemented on the transceiver chip for executing native transceiver functions during normal operation, which can be used for generating the test (RF) signal. Test adaptor circuits are added to the transceiver chip, more specifically to the native circuits, for enabling the native circuits to generate the test RF signal in a self-test mode of operation. Circuits for implementing a particular IIP2 minimizing scheme can be included on the transceiver chip for automatic IIP2 calibration during the self-test mode of operation.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 22, 2010
    Assignee: Icera Canada ULC
    Inventors: Tajinder Manku, Abdellatif Bellaouar, Alan Holden, Hamid R. Safiri