Patents by Inventor Stephen Oglesby

Stephen Oglesby 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).

  • Load switching for transmissions with different peak-to-average power ratios
    Patent number: 6680652
    Abstract: The present invention relates to controlling load impedance during wireless communications to maintain amplifier linearity for transmissions, such as voice and high-speed data, having significantly different peak-to-average power ratios. At a desired output power, a first load impedance is selected for transmissions having a first peak-to-average power ratio and a second load impedance is selected for transmissions having a second peak-to-average power ratio, in order to ensure that appropriate amplifier linearity is achieved for both voice and high-speed data transmissions. Preferably, amplifier efficiency is optimized for transmissions having the first and second peak-to-average power ratios. Changing the effective load impedance may be effected by providing a first impedance network and switching a second impedance network in association with the first impedance network.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 20, 2004
    Assignee: RF Micro Devices, Inc.
    Inventors: Kevin Hoheisel, Richard Hohneke, Rohan Houlden, Neal Mains, Stephen Oglesby
  • Load switching for transmissions with different peak-to-average power ratios
    Publication number: 20030025561
    Abstract: The present invention relates to controlling load impedance during wireless communications to maintain amplifier linearity for transmissions, such as voice and high-speed data, having significantly different peak-to-average power ratios. At a desired output power, a first load impedance is selected for transmissions having a first peak-to-average power ratio and a second load impedance is selected for transmissions having a second peak-to-average power ratio, in order to ensure that appropriate amplifier linearity is achieved for both voice and high-speed data transmissions. Preferably, amplifier efficiency is optimized for transmissions having the first and second peak-to-average power ratios. Changing the effective load impedance may be effected by providing a first impedance network and switching a second impedance network in association with the first impedance network.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventors: Kevin Hoheisel, Richard Hohneke, Rohan Houlden, Neal Mains, Stephen Oglesby