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Doppler-nulling traveling-wave antenna relays for high-speed vehicular communications

  • US 9,294,159 B2
  • Filed: 12/16/2014
  • Issued: 03/22/2016
  • Est. Priority Date: 09/21/2011
  • Status: Active Grant
First Claim
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1. A system to enhance wireless communications in high-speed vehicles through Doppler-nulling traveling-wave antenna relays, the system comprising;

  • an access terminal on a vehicle adapted to transmit wireless communication signals to and receive wireless communication signals from a wireless communication network through a pair of leaky traveling-wave antennas; and

    the pair of leaky traveling-wave antennas arranged to radiate substantially perpendicularly to a direction of motion of the vehicle, whereina first of the leaky traveling-wave antennas is positioned on the vehicle;

    a second of the leaky traveling-wave antennas is positioned along a path of the vehicle and is conductively coupled to one or more access nodes of the wireless communication network; and

    a Doppler frequency shift on the transmitted communication signals and the received communication signals resulting from a motion of the first leaky traveling-wave antenna relative to the second leaky traveling-wave antenna is minimized to zero due to the substantially perpendicular radiation of the pair of leaky traveling wave antennas relative to the direction of motion of the vehicle.

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