×

ELECTRONIC TOLL COLLECTION SYSTEM WITH MULTI-BEAM ANTENNAS

  • US 20080278347A1
  • Filed: 05/09/2008
  • Published: 11/13/2008
  • Est. Priority Date: 05/09/2007
  • Status: Abandoned Application
First Claim
Patent Images

1. An electronic toll collection system for conducting electronic toll collection for a multilane roadway having a direction of travel, the system comprising:

  • a first phased array antenna disposed above a first laneway in the roadway and positioned and configured to have a first plurality of beams, each beam having a beam center ray substantially within a first vertical plane parallel with the direction of travel;

    a second phased array antenna disposed above a second laneway adjacent the first laneway in the roadway and positioned and configured to have a second plurality of beams, each beam having a beam center ray substantially within a second vertical plane parallel with the direction of travel; and

    a reader including a first transceiver for exciting and controlling the first phased array antenna and for receiving incoming signals from the first phased array antenna, a second transceiver for exciting and controlling the second phased array antenna and for receiving incoming signals from the second phased array antenna, and a controller for controlling the transceivers, wherein the controller is configured to conduct electronic toll communications with a transponder within the roadway through the antennas, and wherein the controller is configured to determine whether said transponder is located in said first laneway or said second laneway based on said incoming signals from the first and second phased array antennas.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×