Patents by Inventor Roger Randolph Wang

Roger Randolph Wang 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).

  • Amplifier device
    Patent number: 8451060
    Abstract: An amplifier device including a gain stage, an output stage, at least one phase compensation circuit and at least one coupling suppression device is provided. The gain stage has at least one feedback node. The output stage is coupled to the gain stage and has an output node for outputting an output voltage. Each of the at least one phase compensation circuit is coupled between a corresponding one of the at least one feedback node and the output node. Each of the at least one coupling suppression device is coupled between a corresponding one of the at least one feedback node and a respective coupling node, and is spontaneously turned on in response to a change of a voltage level at the corresponding feedback node when the corresponding feedback node is coupled by noise, thereby suppressing the change of the voltage level at the corresponding feedback node.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: May 28, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ji-Ting Chen, Roger Randolph Wang
  • AMPLIFIER DEVICE
    Publication number: 20120146729
    Abstract: An amplifier device including a gain stage, an output stage, at least one phase compensation circuit and at least one coupling suppression device is provided. The gain stage has at least one feedback node. The output stage is coupled to the gain stage and has an output node for outputting an output voltage. Each of the at least one phase compensation circuit is coupled between a corresponding one of the at least one feedback node and the output node. Each of the at least one coupling suppression device is coupled between a corresponding one of the at least one feedback node and a respective coupling node, and is spontaneously turned on in response to a change of a voltage level at the corresponding feedback node when the corresponding feedback node is coupled by noise, thereby suppressing the change of the voltage level at the corresponding feedback node.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 14, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Ji-Ting Chen, Roger Randolph Wang