Abstract: A conductor for a high-current wireless power transfer (WPT) system includes plural thin-walled tubes formed from aluminum alloys and other materials and alloys with features that are similar to aluminum alloys. The tubes are sufficiently rigid so that they are self-supporting when used in a WPT system, and each of the tubes has a skin layer of about 0.28 mm, and a wall thickness in the range of about 6-12 mm. Plural cuts are formed along the longitudinal axis of each tube, and the plural cuts are effective to increase heat transfer from heat-generating parts of the WPT system to the surrounding area, thereby to aid in cooling. For a tube with an external diameter of about 6 mm, the plural cuts are formed with the dimensions of 1.5 mm width×40 mm length.

Abstract: A hybrid EM-LC resonator for a Wireless Power Transfer (WPT) system includes plural capacitive loops, and LC-circuits that each have mutual inductances in non-resonant modes of operation.

Abstract: A wireless power transfer system includes a transmitter transducer, a signal generator and one or more power receivers. The signal generator may receive a first power signal from a power source and generate an alternating current transmission signal. The signal generator transmits the transmission signal to the transmitter transducer. The transmitter transducer may produce a magnetic field in a power transfer region during conduction of a transmission signal. The one or more power receivers may include a receiver transducer and a power processor. The receiver transducer may inductively receive a varying magnetic flux transmitted from the transmitter transducer when the receiver transducer is located in the power transfer region. The receiver transducer converts the received magnetic flux to a second power signal. The power processor converts the second power signal to a third power signal appropriate for a respective one or more loads.

Abstract: A wireless power transfer system includes a transmitter transducer, a signal generator and one or more power receivers. The signal generator may receive a first power signal from a power source and generate an alternating current transmission signal. The signal generator transmits the transmission signal to the transmitter transducer. The transmitter transducer may produce a magnetic field in a power transfer region during conduction of a transmission signal. The one or more power receivers may include a receiver transducer and a power processor. The receiver transducer may inductively receive a varying magnetic flux transmitted from the transmitter transducer when the receiver transducer is located in the power transfer region. The receiver transducer converts the received magnetic flux to a second power signal. The power processor converts the second power signal to a third power signal appropriate for a respective one or more loads.

Abstract: In some embodiments, a rotor assembly for an aerial vehicle includes a main body; and four or more rotors having blades mounted relative to the main body for rotation about respective axes configured to provide thrust predominantly in a common direction. Respective blade trajectories of rotors of at least one pair of adjacent rotors of the four or more rotors rotate in different planes. The blade trajectories of the at least one pair of adjacent rotors partially overlap when viewed along a line containing the common direction.

Abstract: A wireless near-field self-resonant impulse receiver includes a receiver body constructed to receive energy from a low-frequency external field by using an appropriately tuned, high frequency antenna that operates in an impulse mode under preselected self-resonant conditions.

Abstract: A wireless power transfer system includes a transmitter transducer, a signal generator and one or more power receivers. The signal generator may receive a first power signal from a power source and generate an alternating current transmission signal. The signal generator transmits the transmission signal to the transmitter transducer. The transmitter transducer may produce a magnetic field in a power transfer region during conduction of a transmission signal. The one or more power receivers may include a receiver transducer and a power processor. The receiver transducer may inductively receive a varying magnetic flux transmitted from the transmitter transducer when the receiver transducer is located in the power transfer region. The receiver transducer converts the received magnetic flux to a second power signal. The power processor converts the second power signal to a third power signal appropriate for a respective one or more loads.

Abstract: A method, system, and non-transitory computer-readable medium is provided for enabling a distributed power transfer network for an aerial vehicle, such as a drone. The distributed power transfer network may include wireless power transfer systems that may allow wireless charging and powering of devices within a distance of 10 meters. In some example embodiments, the distributed power transfer system may include at least one transmitter generating at least one transmission signal. The distributed power transfer system may further include a plurality of transducers each conducting a respective transmission signal of the at least one transmission signal, the plurality of transducers being positioned at respective different locations for producing from the respective transmission signals magnetic fields defining associated power transfer regions for transmitting wirelessly with the associated magnetic fields, power to aerial vehicles located in the power transfer regions.

Abstract: In some embodiments, a rotor assembly for an aerial vehicle includes a main body; and four or more rotors having blades mounted relative to the main body for rotation about respective axes configured to provide thrust predominantly in a common direction. Respective blade trajectories of rotors of at least one pair of adjacent rotors of the four or more rotors rotate in different planes. The blade trajectories of the at least one pair of adjacent rotors partially overlap when viewed along a line containing the common direction.

Abstract: A wireless near-field self-resonant impulse receiver includes a receiver body constructed to receive energy from a low-frequency external field by using an appropriately tuned, high frequency antenna that operates in an impulse mode under preselected self-resonant conditions.

Abstract: A wireless power transfer system may include a transmitter transducer assembly, a signal generator and one or more power receivers. The transmitter transducer assembly may include at least one transmitter transducer. The signal generator may be operationally configured to generate an alternating current transmission signal. The one or more power receivers may be electrically connected to one or more respective loads. Each of the one or more power receivers may include a receiver transducer assembly. The receiver transducer assembly may include at least one receiver transducer. Each receiver transducer of the at least one receiver transducer may receive a time varying electromagnetic flux of the electromagnetic field transmitted from the transmitter transducer assembly and produce a second power signal. The power processor may convert the second power signal to a third power signal appropriate for the respective one or more loads.

Abstract: A wireless power transfer system includes a transmitter transducer, a signal generator and one or more power receivers. The signal generator may receive a first power signal from a power source and generate an alternating current transmission signal. The signal generator transmits the transmission signal to the transmitter transducer. The transmitter transducer may produce a magnetic field in a power transfer region during conduction of a transmission signal. The one or more power receivers may include a receiver transducer and a power processor. The receiver transducer may inductively receive a varying magnetic flux transmitted from the transmitter transducer when the receiver transducer is located in the power transfer region. The receiver transducer converts the received magnetic flux to a second power signal. The power processor converts the second power signal to a third power signal appropriate for a respective one or more loads.

Abstract: A wireless power transfer system may include a transmitter transducer assembly, a signal generator and one or more power receivers. The transmitter transducer assembly may include at least one transmitter transducer. The signal generator may be operationally configured to generate an alternating current transmission signal. The one or more power receivers may be electrically connected to one or more respective loads. Each of the one or more power receivers may include a receiver transducer assembly. The receiver transducer assembly may include at least one receiver transducer. Each receiver transducer of the at least one receiver transducer may receive a time varying electromagnetic flux of the electromagnetic field transmitted from the transmitter transducer assembly and produce a second power signal. The power processor may convert the second power signal to a third power signal appropriate for the respective one or more loads.

Abstract: A wireless power transfer system includes a transmitter transducer, a signal generator and one or more power receivers. The signal generator may receive a first power signal from a power source and generate an alternating current transmission signal. The signal generator transmits the transmission signal to the transmitter transducer. The transmitter transducer may produce a magnetic field in a power transfer region during conduction of a transmission signal. The one or more power receivers may include a receiver transducer and a power processor. The receiver transducer may inductively receive a varying magnetic flux transmitted from the transmitter transducer when the receiver transducer is located in the power transfer region. The receiver transducer converts the received magnetic flux to a second power signal. The power processor converts the second power signal to a third power signal appropriate for a respective one or more loads.

Abstract: A wireless near-field self-resonant impulse receiver includes a receiver body constructed to receive energy from a low-frequency external field by using an appropriately tuned, high frequency antenna that operates in an impulse mode under preselected self-resonant conditions.