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US 2020/0006989 A1Published application
Low frequency rectenna system for wireless charging
AssigneeAMI Research & Development, LLC
InventorsJohn T. Apostolos, James D. Logan, William Mouyos
Life of this patent
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Abstract
A human safe wireless charging system using a circularly polarized source antenna that can radiate in either a hemispherical pattern or directional cardiod-like patterns at a 40-50, 150, or 200 MHz frequencies to a receiving loop antenna which is coupled to a parasitic receive element.
Claims19
A wireless power apparatus comprising:
- a first loop antenna;
- a second loop antenna;
- and
- a circuit connected to the first and second loop antennas, the circuit to selectively operate the loop antennas in two operating modes for receiving wireless power, a first receive mode providing a radiation pattern having a major axis in a first direction, and a second receive mode providing a radiation pattern having a major axis in a second direction orthogonal to the first direction.
1 more element
Dependencies are inferred from the claim text.