Patents by Inventor Matthew Timothy Aitken

Matthew Timothy Aitken 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).

  • Tuner for digital terrestrial broadcast signals
    Patent number: 7065337
    Abstract: A single conversion tuner is provided for receiving digital terrestrial broadcast signals. The tuner comprises a single frequency changer comprising a mixer and local oscillator controlled by a PLL synthesiser. A non-alignable variable low pass filter is provided between the tuner input and the mixer, which is of the image reject type. The bandwidth of the filter is varied so as to track the local oscillator frequency to provide sufficient attenuation of the image channel without requiring any alignment during manufacture.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: June 20, 2006
    Assignee: Zarlink Semiconductor Limited
    Inventors: Nicholas Paul Cowley, Scott Cuthbertson, Matthew Timothy Aitken
  • Tuner
    Publication number: 20040058660
    Abstract: A single conversion tuner is provided for receiving digital terrestrial broadcast signals. The tuner comprises a single frequency changer comprising a mixer and local oscillator controlled by a PLL synthesiser. A non-alignable variable low pass filter is provided between the tuner input and the mixer, which is of the image reject type. The bandwidth of the filter is varied so as to track the local oscillator frequency to provide sufficient attenuation of the image channel without requiring any alignment during manufacture.
    Type: Application
    Filed: July 14, 2003
    Publication date: March 25, 2004
    Inventors: Nicholas Paul Cowley, Scott Cuthbertson, Matthew Timothy Aitken