Patents by Inventor Gerard James WIMPENNY

Gerard James WIMPENNY 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).

  • Envelope tracking system having fast transition time for a radio frequency (RF) amplifier
    Patent number: 11271599
    Abstract: An envelope tracking system includes an envelope signal generator, a supply modulator coupled to the envelope signal generator, the supply modulator comprising a switching regulator path configured to provide an output voltage at an output node to a power amplifier when in an average power tracking (APT) mode, the switching regulator path configured to operate together with a linear path to provide the output voltage at the output node to the power amplifier when in an envelope tracking (ET) mode, a capacitor having a first and second terminal, the first terminal coupled to ground, a switch coupled between the output node and the second terminal of the capacitor, the switch being configured to selectively disconnect the capacitor from the output node, and a circuit coupled between the output node and the second terminal of the capacitor, the circuit comprising a bi-directional current-limiting switch, the circuit configured to charge or discharge the capacitor such that a voltage across the capacitor changes
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: March 8, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Iulian Mirea, Gerard James Wimpenny, Jingxue Lu, Jongshick Ahn
  • ENVELOPE TRACKING SYSTEM HAVING FAST TRANSITION TIME FOR A RADIO FREQUENCY (RF) AMPLIFIER
    Publication number: 20210194517
    Abstract: An envelope tracking system includes an envelope signal generator, a supply modulator coupled to the envelope signal generator, the supply modulator comprising a switching regulator path configured to provide an output voltage at an output node to a power amplifier when in an average power tracking (APT) mode, the switching regulator path configured to operate together with a linear path to provide the output voltage at the output node to the power amplifier when in an envelope tracking (ET) mode, a capacitor having a first and second terminal, the first terminal coupled to ground, a switch coupled between the output node and the second terminal of the capacitor, the switch being configured to selectively disconnect the capacitor from the output node, and a circuit coupled between the output node and the second terminal of the capacitor, the circuit comprising a bi-directional current-limiting switch, the circuit configured to charge or discharge the capacitor such that a voltage across the capacitor changes
    Type: Application
    Filed: December 17, 2020
    Publication date: June 24, 2021
    Inventors: Iulian MIREA, Gerard James WIMPENNY, Jingxue LU, Jongshick AHN