Patents by Inventor Ian Ka Yin Chung

Ian Ka Yin Chung 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: 9276545
    Abstract: Various embodiments described herein relate to a power management block and one or more amplification blocks used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier, both of which are included in a selected one of the amplification blocks. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take into account various characteristics of the transmitter components and control values. Post power amplifier transmission power is detected for input into the one or more feedback loops executed in the power management block. A controller for the power amplifier is design to stabilize the system with respect to gain expansion in the power amplifier.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: March 1, 2016
    Assignee: BLACKBERRY LIMITED
    Inventors: Wen-Yen Chan, Nasserullah Khan, Ian Ka Yin Chung, Hamza Mohaimeen Bari
  • Publication number: 20140065990
    Abstract: Various embodiments described herein relate to a power management block and one or more amplification blocks used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier, both of which are included in a selected one of the amplification blocks. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take into account various characteristics of the transmitter components and control values. Post power amplifier transmission power is detected for input into the one or more feedback loops executed in the power management block. A controller for the power amplifier is design to stabilize the system with respect to gain expansion in the power amplifier.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 6, 2014
    Applicant: BlackBerry Limited
    Inventors: Wen-Yen Chan, Nasserullah Khan, Ian Ka Yin Chung, Hamza Mohaimeen Bari
  • Patent number: 8620238
    Abstract: Various embodiments described herein relate to a power management block and one or more amplification blocks used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier, both of which are included in a selected one of the amplification blocks. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take into account various characteristics of the transmitter components and control values. Post power amplifier transmission power is detected for input into the one or more feedback loops executed in the power management block. A controller for the power amplifier is design to stabilize the system with respect to gain expansion in the power amplifier.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: December 31, 2013
    Assignee: BlackBerry Limited
    Inventors: Wen-Yen Chan, Nasserullah Khan, Ian Ka Yin Chung, Hamza Mohaimeen Bari
  • Publication number: 20120021704
    Abstract: Various embodiments described herein relate to a power management block and one or more amplification blocks used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier, both of which are included in a selected one of the amplification blocks. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take 1n into account various characteristics of the transmitter components and control values. Post power amplifier transmission power is detected for input into the one or more feedback loops executed in the power management block. A controller for the power amplifier is design to stabilize the system with respect to gain expansion in the power amplifier.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 26, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Wen-Yen Chan, Nasserullah Khan, Ian Ka Yin Chung, Hamza Mohaimeen Bari