Patents by Inventor Sai Chu Wong

Sai Chu Wong 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).

  • Transmitter having a programmable amplifier operating class
    Patent number: 8712344
    Abstract: A transmitter is adapted to be programmed to select an amplifier operating class for the transmitter out of a plurality of amplifier operating classes. The transmitter is also adapted to operate according to the selected amplifier operating class to communicate a signal to an antenna.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 29, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Zhondga Wang, Sai Chu Wong, Yunteng Huang
  • Providing automatic power control for a power amplifier
    Patent number: 8471629
    Abstract: A power control circuit is coupled to receive a feedback signal from a power amplifier (PA) and generate a control signal to control a variable gain amplifier (VGA) coupled to an input to the PA based on the feedback signal. The power control circuit may include, in one embodiment, a mute circuit to generate a mute signal to be provided to the VGA when the control signal is less than a first level and a clamp circuit to clamp a control voltage used to generate the control signal from exceeding a threshold level.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: June 25, 2013
    Assignee: Silicon Laboratories Inc
    Inventors: Axel Thomsen, Zhongda Wang, Sai Chu Wong, Yunteng Huang
  • Providing Automatic Power Control For A Power Amplifier
    Publication number: 20130002357
    Abstract: A power control circuit is coupled to receive a feedback signal from a power amplifier (PA) and generate a control signal to control a variable gain amplifier (VGA) coupled to an input to the PA based on the feedback signal. The power control circuit may include, in one embodiment, a mute circuit to generate a mute signal to be provided to the VGA when the control signal is less than a first level and a clamp circuit to clamp a control voltage used to generate the control signal from exceeding a threshold level.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Inventors: Axel Thomsen, Zhongda Wang, Sai Chu Wong, Yunteng Huang
  • TRANSMITTER
    Publication number: 20120252383
    Abstract: A transmitter is adapted to be programmed to select an amplifier operating class for the transmitter out of a plurality of amplifier operating classes. The transmitter is also adapted to operate according to the selected amplifier operating class to communicate a signal to an antenna.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: ZHONDGA WANG, SAI CHU WONG, YUNTENG HUANG
  • GENERATING A MODULATED SIGNAL FOR A TRANSMITTER
    Publication number: 20120250789
    Abstract: A technique includes generating an angle modulated square wave signal and progressively filtering the angle modulated square wave signal in a transmitter using a plurality of low pass filters to produce a modulated sinusoidal signal to drive an antenna. The technique includes programming the transmitter to tune a corner frequency of the filtering to a frequency within a range of frequencies selectable using the programming, based on a carrier frequency associated with the modulated sinusoidal signal.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Zhondga Wang, Sai Chu Wong, Yunteng Huang