Patents by Inventor Mark P. Van Der Heijden

Mark P. Van Der Heijden 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).

  • Apparatus method and computer readable medium for a transmitter
    Patent number: 8451886
    Abstract: An apparatus comprising a signal generator for generating a polar representation of a signal. The apparatus comprises further a first filtering unit configured to filter a low frequency part of the amplitude component of said signal and a second filtering unit configured to filter a high frequency-part of the amplitude component of said signal. In addition, the apparatus includes a pulse width modulating unit configured to modulate the filtered high frequency part of the amplitude component of said signal together with the phase component of said signal. Finally the apparatus includes a DC-DC converter configured to convert the filtered low frequency part of the amplitude component of said signal. Said DC-DC converter supplies a switching mode power amplifier for amplifying the pulse width modulated signal.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: May 28, 2013
    Assignee: ST-Ericsson SA
    Inventors: Jan S. Vromans, Mark P. Van Der Heijden
  • APPARATUS METHOD AND COMPUTER READABLE MEDIUM FOR A TRANSMITTER
    Publication number: 20100278228
    Abstract: An apparatus comprising a signal generator for generating a polar representation of a signal. The apparatus comprises further a first filtering unit configured to filter a low frequency part of the amplitude component of said signal and a second filtering unit configured to filter a high frequency-part of the amplitude component of said signal. In addition, the apparatus includes a pulse width modulating unit configured to modulate the filtered high frequency part of the amplitude component of said signal together with the phase component of said signal. Finally the apparatus includes a DC-DC converter configured to convert the filtered low frequency part of the amplitude component of said signal. Said DC-DC converter supplies a switching mode power amplifier for amplifying the pulse width modulated signal.
    Type: Application
    Filed: August 18, 2008
    Publication date: November 4, 2010
    Inventors: Jan S. Vromans, Mark P. Van Der Heijden