Patents by Inventor Joel C. Roper

Joel C. Roper 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).

  • Shared tower system for accomodating multiple service providers
    Publication number: 20030032424
    Abstract: A system for sharing a cellular tower among multiple service providers comprises an antenna having an array of elements operable to define multiple, individual beams for signals in a communication frequency band and converter circuitry to convert the communication frequency band to a digital band. Filtering and signal processing circuitry define digital band portions for each of the at least two service providers, and drive the antenna to define at least one individual beam for each individual service provider.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 13, 2003
    Inventors: Mano D. Judd, Gregory A. Maca, Joel C. Roper