Patents by Inventor Vladan M. Jevremovic

Vladan M. Jevremovic 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: 6275482
    Abstract: A base station for use in a CDMA mobile radio communication system utilizes a combined angular, spatial, and temporal diversity antenna architecture to improve reverse link gain and coverage. The architecture is formed from a first and second diversity narrow beamwidth antenna element arranged to receive CDMA signals from a predetermined geographic coverage area. Each antenna element is oriented so that respective peak boresights form a 45 to 60° angle with respect to each other, and are slanted 22.5 to 30° with respect to a sector boresight. The first and second antenna elements are separated in distance by at least 10 wavelengths. A time delay can be connected to the outputs of the antenna elements to provide temporal diversity by delaying received signals by a predetermined period of time. A max ratio signal combiner continuously provides the best total input signal for a base station receiver.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 14, 2001
    Assignee: Qwest Communications International Inc.
    Inventors: Vladan M. Jevremovic, Patrick L. Perini