Patents by Inventor Mark L Blake

Mark L Blake 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).

  • Patent number: 7505435
    Abstract: A compact hybrid comprises reactive power-dividers and signal paths coupling the reactive power-dividers to provide a predetermined phase difference therebetween. The signal paths may have 90-degree bends therein to reduce a distance between adjacent reactive power-dividers to less than a physical distance associated with the predetermined phase difference in a stripline medium. The hybrid may be a 180-degree hybrid and may be part of RF circuitry of a wireless communication device to combine signals from a pair of antennas and to provide a sum signal and a difference signal. The RF circuitry may also comprise switching circuitry to select between the sum signal and the difference signal based on a signal quality of the sum and difference signals.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: March 17, 2009
    Assignee: Intel Corporation
    Inventors: David C Wittwer, Mark L Blake