Patents by Inventor John G. Karakis

John G. Karakis 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: 8315670
    Abstract: In an antenna interface system of a wireless network base station, each sector of the base station is outfitted with two dual-band duplexer assemblies, each of which includes a tower-mounted antenna unit, an RF filter unit (e.g., triplexer), and an RF feed or antenna cable that interconnects the two. One antenna unit transmits in one communication band, and the other transmits in a second band. Both units receive signals over the two bands. The RF filter units pass transmit data on to the cables and filter receive data of both bands for separate output. The antenna units and filter units act as cable-end interfaces for multiplexing and de-multiplexing the transmit and receive data on and off the cables. Thus, each cable carries transmit data for one communication band and receive data for both bands, for a total of two cables per sector for dual-band applications.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: November 20, 2012
    Assignee: Alcatel Lucent
    Inventor: John G. Karakis
  • Publication number: 20090176470
    Abstract: In an antenna interface system of a wireless network base station, each sector of the base station is outfitted with two dual-band duplexer assemblies, each of which includes a tower-mounted antenna unit, an RF filter unit (e.g., triplexer), and an RF feed or antenna cable that interconnects the two. One antenna unit transmits in one communication band, and the other transmits in a second band. Both units receive signals over the two bands. The RF filter units pass transmit data on to the cables and filter receive data of both bands for separate output. The antenna units and filter units act as cable-end interfaces for multiplexing and de-multiplexing the transmit and receive data on and off the cables. Thus, each cable carries transmit data for one communication band and receive data for both bands, for a total of two cables per sector for dual-band applications.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 9, 2009
    Inventor: John G. Karakis