Patents by Inventor Andrew Altham

Andrew Altham 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).

  • Method for controlling a linear power amplifier
    Patent number: 7525377
    Abstract: A linear power amplifier filters an instantaneous input signal to generate a filtered input signal, combines the instantaneous input signal and filtered input signal to generate a modified drain source voltage waveform and modulates a switched mode power supply to the linear power amplifier in accordance with the modified waveform.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: April 28, 2009
    Assignee: Nokia Siemens Networks GmbH & Co. KG
    Inventors: Andrew Altham, John Domokos
  • Method For Controlling A Linear Power Amplifier
    Publication number: 20070290742
    Abstract: A linear power amplifier filters an instantaneous input signal to generate a filtered input signal, combines the instantaneous input signal and filtered input signal to generate a modified drain source voltage waveform and modulates a switched mode power supply to the linear power amplifier in accordance with the modified waveform.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 20, 2007
    Inventors: Andrew Altham, John Domokos