Patent ID: 11938830
Assignee: WITRICITY CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B  H

Claim 12:
13. An apparatus for determining a position of a vehicle-based wireless power transfer device relative to a ground-based wireless power transfer device, the apparatus comprising:
a transceiver configured to transmit and receive a wide-band signal suitable for providing a specified position resolution;
a plurality of transponders, each configured to receive the wide-band signal and to transmit a response signal suitable for providing the specified position resolution;
the transceiver further configured to measure a round-trip time based on the received response signal of each of the plurality of transponders;
a processor configured to:
determine the position of the vehicle-mounted wireless power transfer device relative to the ground-based wireless power transfer device based on the measured round-trip times.