Patents by Inventor Chiang-His LEE

Chiang-His LEE 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).

  • Operational transconductance amplifier, operational transconductance amplifier-capacitor filter and high order reconfigurable analog filter
    Patent number: 9401694
    Abstract: An operational transconductance amplifier includes a fully-differential amplifying circuit, a bias driving circuit, and a common mode feedback circuit. The fully-differential amplifying circuit is configured for receiving a differential input voltage and providing a differential output voltage. The fully-differential amplifying circuit includes a plurality of diffusor-differential-pair circuits. The bias driving circuit is configured for providing at least one first bias current to drive the fully-differential amplifying circuit and adjust the transconductance of the transconductance amplifier. The common mode feedback circuit is configured for stabilizing the differential output voltage. An operational transconductance amplifier-capacitor (OTA-C) filter and a high order filter are disclosed herein as well.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 26, 2016
    Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Sheng-Yu Peng, Hung-Yu Shih, Min-Rui Lai, Chiang-His Lee, Tzu-Yun Wang
  • OPERATIONAL TRANSCONDUCTANCE AMPLIFIER, OPERATIONAL TRANSCONDUCTANCE AMPLIFIER-CAPACITOR FILTER AND HIGH ORDER RECONFIGURABLE ANALOG FILTER
    Publication number: 20150200648
    Abstract: An operational transconductance amplifier includes a fully-differential amplifying circuit, a bias driving circuit, and a common mode feedback circuit. The fully-differential amplifying circuit is configured for receiving a differential input voltage and providing a differential output voltage. The fully-differential amplifying circuit includes a plurality of diffusor-differential-pair circuits. The bias driving circuit is configured for providing at least one first bias current to drive the fully-differential amplifying circuit and adjust the transconductance of the transconductance amplifier. The common mode feedback circuit is configured for stabilizing the differential output voltage. An operational transconductance amplifier-capacitor (OTA-C) filter and a high order filter are disclosed herein as well.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 16, 2015
    Inventors: Sheng-Yu PENG, Hung-Yu SHIH, Min-Rui LAI, Chiang-His LEE, Tzu-Yun WANG