Patents by Inventor Michael D. Lockard

Michael D. Lockard 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).

  • Power amplifier operation
    Patent number: 10541658
    Abstract: Systems and methods for improving power amplifier operation are provided. A system may include a baseband signal generator communicatively coupled to a baseband signal digital-to-analog converter. The baseband signal digital-to-analog converter may be communicatively coupled to two or more power amplifiers. The system may also include an envelope signal generator communicatively coupled to an envelope signal digital-to-analog converter. The system may further include a supply modulator communicatively coupled to the envelope signal digital-to-analog converter and the two or more power amplifiers for shared envelope tracking across the two or more power amplifiers.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: January 21, 2020
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Andrew H. Zai, Michael D. Lockard, Kenneth E. Kolodziej, Jeffrey S. Herd
  • POWER AMPLIFIER OPERATION
    Publication number: 20180175809
    Abstract: Systems and methods for improving power amplifier operation are provided. A system may include a baseband signal generator communicatively coupled to a baseband signal digital-to-analog converter. The baseband signal digital-to-analog converter may be communicatively coupled to two or more power amplifiers. The system may also include an envelope signal generator communicatively coupled to an envelope signal digital-to-analog converter. The system may further include a supply modulator communicatively coupled to the envelope signal digital-to-analog converter and the two or more power amplifiers for shared envelope tracking across the two or more power amplifiers.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 21, 2018
    Inventors: Andrew H. Zai, Michael D. Lockard, Kenneth E. Kolodziej, Jeffrey S. Herd