Back to results
US 11,296,554 B2Granted
FM scavenging for wireless charging
AssigneeAntenum, Inc.
InventorsJames D. Logan, John T. Apostolos, William Mouyos, Jeffrey Logan
Life of this patent
Estimating the term…
Abstract
An apparatus, system, and method directed to the charging of electronic devices, and in particular to the wireless charging of battery enabled devices using FM band signals.
Claims15
An apparatus for providing power to an electrical device, the power scavenged from ambient radio frequency energy, the apparatus comprising:
- at least one antenna element, disposed in a loop or in a portion of a loop;
- a detector, coupled to the antenna, for detecting radio frequency energy in a Frequency Modulation (FM) broadcast band, the detector further comprising an electric dipole mode detector and a magnetic dipole mode detector;
- a controller, coupled to the detector, for providing an output indicating whether the electric dipole mode detector or the magnetic dipole mode detector provides a higher signal strength;
- a rectifier, coupled to the controller, and selectively coupled to either the electric dipole mode detector or the magnetic dipole mode detector, depending on the output of the controller, for providing a direct current output;
- and
- a battery, coupled to be charged by the direct current output provided by the rectifier.
3 more elements
A method for scavenging power from one or more Frequency Modulation (FM) broadcast band signals, the method comprising:
- receiving, via at least one antenna element having a loop shape or a portion of a loop shape, a received radio signal;
- detecting the received radio signal including detecting an electric dipole mode signal and a magnetic dipole mode signal;
- determining whether the electric dipole mode signal or the magnetic dipole mode signal has higher signal strength;
- selectively generating a direct current output from either the electric dipole mode signal or the magnetic dipole mode signal, depending on which has the higher signal strength;
- and
- charging an energy storage device by using the direct current output.
3 more elements
Dependencies are inferred from the claim text.