Modeling Toll Tag Reader Electromagnetic Coupling to Locate Lane Cross-Read Error Potential
October 21, 2014 === === The electromagnetic coupling between an ISM band (902-928 MHz) highway toll tag and a collection gateway reader is simulated using a high frequency asymptotic EM analysis technique. The study illustrates how traffic congestion in the toll gateway leads to cross-lane toll reads due to additional EM scattering and multipath effects. Simulations are provided by Delcross Savant--an asymptotic EM analysis package aimed at simulating installed antenna performance and antenna coupling scenarios in very electrically large and complex environments.

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