Patents by Inventor Tsun-Yuan FAN

Tsun-Yuan FAN 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 circuit having poly resistor with biased depletion region
    Patent number: 10461702
    Abstract: The present invention provides an amplifier circuit, wherein the amplifier circuit includes an operational amplifier and a feedback path. The operational amplifier has an input terminal and an output terminal, and is arranged for receiving an input signal to generate an output signal. The feedback path is coupled between the input terminal and the output terminal of the operational amplifier, wherein the feedback path comprises at least two poly resistors, and a depletion region of at least one of the two poly resistors is biased by the output signal generated by the operational amplifier.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 29, 2019
    Assignee: MEDIATEK INC.
    Inventors: Tsun-Yuan Fan, Tze-Chien Wang
  • AMPLIFIER CIRCUIT HAVING POLY RESISTOR WITH BIASED DEPLETION REGION
    Publication number: 20180309415
    Abstract: The present invention provides an amplifier circuit, wherein the amplifier circuit includes an operational amplifier and a feedback path. The operational amplifier has an input terminal and an output terminal, and is arranged for receiving an input signal to generate an output signal. The feedback path is coupled between the input terminal and the output terminal of the operational amplifier, wherein the feedback path comprises at least two poly resistors, and a depletion region of at least one of the two poly resistors is biased by the output signal generated by the operational amplifier.
    Type: Application
    Filed: March 5, 2018
    Publication date: October 25, 2018
    Inventors: Tsun-Yuan Fan, Tze-Chien Wang
  • Current amplifier and transmitter using the same
    Patent number: 9716499
    Abstract: A current amplifier and a transmitter using the same. The current amplifier has a first and second transistor and a voltage level shifting unit. The first transistor has a gate receiving an input current and a drain receiving a driving current. The voltage level shifting unit providing a voltage shift is coupled between the drain of the first transistor and the gate of the second transistor. An output current is generated at the drain of the second transistor.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: July 25, 2017
    Assignee: MEDIATEK INC.
    Inventors: Tsun-Yuan Fan, Wen-Hua Chang
  • CURRENT AMPLIFIER AND TRANSMITTER USING THE SAME
    Publication number: 20160087632
    Abstract: A current amplifier and a transmitter using the same. The current amplifier has a first and second transistor and a voltage level shifting unit. The first transistor has a gate receiving an input current and a drain receiving a driving current. The voltage level shifting unit providing a voltage shift is coupled between the drain of the first transistor and the gate of the second transistor. An output current is generated at the drain of the second transistor.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 24, 2016
    Inventors: Tsun-Yuan FAN, Wen-Hua CHANG