Patents by Inventor Aoyang Zhang

Aoyang Zhang 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).

  • Sub-harmonic switching power amplifier
    Patent number: 11159126
    Abstract: A subharmonic switching digital power amplifier system includes a power amplifier core that includes at least one power amplifier operable in a power back-off region and a power supply providing at least one operating voltage to the power amplifier. Characteristically, the power amplifier is toggled at a subharmonic component of a carrier frequency (Fc) to achieve power back-off wherein the power amplifier is operated in a voltage mode or current mode driver. Multi-subharmonics can be used to further enhance the power back-off efficiency. A switching digital power amplifier system employing phase interleaving is also provided.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: October 26, 2021
    Assignee: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Shuo-Wei Chen, Aoyang Zhang
  • SUB-HARMONIC SWITCHING POWER AMPLIFIER
    Publication number: 20200266768
    Abstract: A subharmonic switching digital power amplifier system includes a power amplifier core that includes at least one power amplifier operable in a power back-off region and a power supply providing at least one operating voltage to the power amplifier. Characteristically, the power amplifier is toggled at a subharmonic component of a carrier frequency (Fc) to achieve power back-off wherein the power amplifier is operated in a voltage mode or current mode driver. Multi-subharmonics can be used to further enhance the power back-off efficiency. A switching digital power amplifier system employing phase interleaving is also provided.
    Type: Application
    Filed: February 18, 2020
    Publication date: August 20, 2020
    Inventors: Shuo-Wei CHEN, Aoyang Zhang