Patents by Inventor Lukun Zhai

Lukun Zhai 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).

  • Single-to-differential converter
    Patent number: 11973478
    Abstract: Apparatuses include (among other components) a first gain device connected to receive an initial voltage, a second gain device in series with the first gain device and connected to receive output of the first gain device, differential gain devices connected to receive outputs from the first gain device and the second gain device (the differential gain devices provide opposite voltage outputs from the apparatus) and high-frequency compensation feed-forward paths connected to the first gain device and the second gain device.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: April 30, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Xu Zhang, Mingming Zhang, Hanqing Zhao, Lukun Zhai, Dan Liu, Xuan Li
  • SINGLE-TO-DIFFERENTIAL CONVERTER
    Publication number: 20230066864
    Abstract: Apparatuses include (among other components) a first gain device connected to receive an initial voltage, a second gain device in series with the first gain device and connected to receive output of the first gain device, differential gain devices connected to receive outputs from the first gain device and the second gain device (the differential gain devices provide opposite voltage outputs from the apparatus) and high-frequency compensation feed-forward paths connected to the first gain device and the second gain device.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 2, 2023
    Applicant: GLOBALFOUNDRIES U.S. Inc.
    Inventors: Xu Zhang, Mingming Zhang, Hanqing Zhao, Lukun Zhai, Dan Liu, Xuan Li
  • AMPLIFIER HAVING DISTRIBUTED DIFFERENTIAL POSITIVE FEEDBACK
    Publication number: 20230053023
    Abstract: Amplifier devices includes a first amplifier connected to receive an input voltage. The first amplifier outputs an internal voltage. These structures also include a second amplifier having an input node connected to receive the internal voltage and an output node outputting an output voltage. A resistive feedback loop is connected to the input node and the output node of the second amplifier. A first cross-coupled bandwidth boosting stage is connected to the input node of the second amplifier and a second cross-coupled bandwidth boosting stage connected to the output node of the second amplifier. The cross-coupled bandwidth boosting stages form a distributed differential positive feedback structure.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 16, 2023
    Applicant: GlobalFoundries U.S. Inc.
    Inventors: Mingming Zhang, Xu Zhang, Hanqing Zhao, Lukun Zhai, Dan Liu, Xuan Li