{
  "$type": "site.standard.document",
  "description": "Wireless communications between a vehicle base station and a transponder are authenticated. In accordance with one or more embodiments, two or more antennas including at least one antenna within a vehicle are respectively driven using driving currents multiplied by different superposition factors…",
  "path": "/patents/984178",
  "publishedAt": "2013-09-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R25/00",
    "NXP BV [NL]"
  ],
  "textContent": "Wireless communications between a vehicle base station and a transponder are authenticated. In accordance with one or more embodiments, two or more antennas including at least one antenna within a vehicle are respectively driven using driving currents multiplied by different superposition factors for at least two iterative cycles. Separate vector components of the respective fields emitted by the antennas are used for calculating the superposition factors. For each cycle, each of the antennas is concurrently driven using the same phase respectively using the driving currents multiplied by the superposition factors, and superposed vector components are detected for a superposed signal including signals from both antennas. Communications are authenticated based on the detected superposed vector components for each for the superposed signal of each cycle being within a system error-based range of the sum of the separate vector components for each of the interior and exterior antennas as multiplied respectively by the superposition factors for the antenna from which the vector components are received.",
  "title": "Field superposition apparatus, system and method therefor"
}