Apparatus, system, and method for multicoil telemetry

摘要

An apparatus, system, and method for multicoil telemetry are disclosed. In one embodiment, the apparatus includes an intermediate coil disposed between a driving coil and a receiving coil, where the intermediate coil is configured to act on magnetic fields between the driving coil and receiving coil in order to provide improved coupling efficiency. The improved coupling may assist in providing efficient power transfer and/or data transfer utilizing the magnetic fields. In some embodiments the receiving coil may be in direct communication with the intermediate coil, without any other intermediate coils. In some embodiments, the apparatus includes a second intermediate coil disposed between the driving coil and receiving coil to improve the transfer efficiency between the driving and receiving coils. The intermediate coils may have a high quality factor and be configured to decouple the resistance between the driving and receiving coils.

主权项

1. An apparatus comprising:
a driving inductive unit, the driving inductive unit coupled to an electric source and configured to generate an alternating magnetic field; and an intermediate inductive unit disposed between the driving inductive unit and a receiving inductive unit, wherein:
the intermediate inductive unit has a quality factor (Qt);the receiving inductive unit has another quality factor (Ql);the intermediate inductive unit is configured to alter the shape of the generated alternating magnetic field to optimize coupling efficiency between the driving inductive unit and the receiving inductive unit such that maximum power transfer is achieved by, for a given coupling factor (k2) between the receiving inductive unit and the intermediate inductive unit, selecting one of a coupling factor (k1) between the driving inductive unit and the intermediate inductive unit or a further quality factor (Qd) of the driving inductive unit, and determining the other of the coupling factor (k1) or the further quality factor (Qd) to achieve a loading factor (N) of value 1 according to:N=k12⁢Qd⁢Qt1+k22⁢Qt⁢Ql;and the driving inductive unit is configured to be in communication with the receiving inductive unit without requiring any other intermediate inductive units.