Patents by Inventor Andrew W. Zai

Andrew W. Zai 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).

  • Adaptive interference canceller in a digital phase array
    Patent number: 8817927
    Abstract: A digital phased array may include a plurality of antenna elements forming a main array of the digital phased array, a plurality of mixers configured to down-convert data received at respective ones of the antenna elements, a plurality of analog-to-digital converters configured to digitize data provided by corresponding ones of the mixers, and a digital signal processor. The digital signal processor may be configured to receive digitized data including at least one interference signal and at least one desired signal, determine an angle of arrival of the at least one interference signal, steer a beam of the main array toward the at least one interference signal based on the determined angle of arrival, and perform interference cancellation relative to the at least one interference signal.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: August 26, 2014
    Assignee: The Johns Hopkins University
    Inventors: Andrew W. Zai, Cesar A. Lugo, Matthew D. Sharp, Minhtri T. Ho