Abstract: Method and system for wireless power transmission are disclosed. In one aspect, the system includes a charging base positioned on a desktop component and configured to be positioned on a desktop. The system also includes a transmitter located in the charging base and including a transmit coil wound about a plane, the transmitter being configured to wirelessly transfer power, via a wireless field, from the transmit coil to a first receiver. The system further includes a power relay configured to be positioned on the desktop and configured to relay power received from the transmitter to at least one peripheral device different from the first receiver when the peripheral device is positioned on the desktop.

Abstract: Improved battery-charging system for a vehicle. Primary and secondary coils are located in places where the vehicle can receive power from the primary coil by pulling into a parking space, for example. The parking space may have a coil embedded in the ground, or may have an array of coils embedded in the ground. A guidance system is disclosed. Fine positioning is also disclosed. The secondary coil in the vehicle can also be raised or lowered to improve coupling.

Abstract: A wireless power bridge that allows magnetic transmission of energy across a solid barrier such as a wall. A circuit is described for controlling the operation.

Abstract: The disclosure provides systems, methods, and apparatus for wireless power transfer. In one aspect, an apparatus configured to receive wireless power from a transmitter is provided. The apparatus includes an inductor having an inductance value. The apparatus further includes a capacitor electrically connected to the inductor and having a capacitance value. The apparatus further includes an optimizing circuit configured to optimize transfer efficiency of power received wirelessly from the transmitter, provided that an amount of the power received wirelessly and provided to a load is greater than or equal to a received power threshold, or optimize the amount of the power received wirelessly from the transmitter, provided that the power transfer efficiency is greater than or equal to an efficiency threshold.

Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power transmitter includes a transmit antenna configured as a resonant tank including a loop inductor and an antenna capacitance. The transmitter further includes an amplifier configured to drive the transmit antenna and a matching circuit operably coupled between the transmit antenna and the amplifier. The transmitter also includes a capacitor integrating the antenna capacitance and a matching circuit capacitance.

Abstract: A wireless power system includes a power source, power receiver, and components thereof. The system can also include a parasitic antenna that can improve the coupling to the power source in various modes. The antenna can have both a variable capacitor and a variable inductor, and both of those can be changed in order to change characteristics of the matching.

Abstract: System and method for wireless power transfer based on values set to comply with limits from multiple different agencies.

Abstract: Exemplary embodiments are directed to wireless charging. An electronic device may comprise at least one receive antenna integrated within an electronic device and configured to receive wireless power from a wireless transmit antenna. Further, the at least one receive antenna may be spaced from each conductive component within the electronic device having a clearance therebetween adapted to enable formation of a magnetic field around the loop conductor.

Abstract: System and method for wireless power transfer based on values set to comply with limits from multiple different agencies.

Abstract: Improved battery-charging system for a vehicle. Primary and secondary coils are located in places where the vehicle can receive power from the primary coil by pulling into a parking space, for example. The parking space may have a coil embedded in the ground, or may have an array of coils embedded in the ground. A guidance system is disclosed. Fine positioning is also disclosed. The secondary coil in the vehicle can also be raised or lowered to improve coupling.

Abstract: A wireless power transmission system and method for transmitting power from a charging base to receivers located both on and outside the charging base. The system utilizes wireless power transmission of a transmitter with a wound transmit coil.

Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power transmitter includes a transmit antenna configured as a resonant tank including a loop inductor and an antenna capacitance. The transmitter further includes an amplifier configured to drive the transmit antenna and a matching circuit operably coupled between the transmit antenna and the amplifier. The transmitter also includes a capacitor integrating the antenna capacitance and a matching circuit capacitance.

Abstract: This disclosure provides systems, methods and apparatus for wireless power transfer using resonant ferrite antennas to transmit and receive power. Ferrite structures concentrate magnetic flux lines into the structure, thereby creating a magnetic path and field with less interference and eddy current losses than in device electronics, thereby improving the efficiency of magnetic power distribution. The disclosure describes tuning the resonance frequency by mechanically adjusting the position of the coil on the rod. The ferrite rod antennas described herein may be used to transfer power to handheld communication devices.

Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power receiver includes a receive antenna for coupling with a transmit antenna of transmitter generating a magnetic near field. The receive antenna receives wireless power from the magnetic near field and includes a resonant tank and a parasitic resonant tank wirelessly coupled to the resonant tank. A wireless power transmitter includes a transmit antenna for coupling with a receive antenna of a receiver. The transmit antenna generates a magnetic near field for transmission of wireless power and includes a resonant tank and a parasitic resonant tank coupled to the resonant tank.

Abstract: A method and system for providing power to a chargeable device via radio frequency link are provided. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially unmodulated signal. The method further comprises radiating a substantially unmodulated radio frequency (RF) signal to the chargeable device via a transmit antenna based on the substantially unmodulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially unmodulated RF signal.

Abstract: Exemplary embodiments are directed to wireless power transfer. A wireless power transmission receiver includes a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom. The receiver further includes a passive rectifier circuit coupled to the parallel resonator. The passive rectifier circuit is configured to transform a load impedance to the parallel resonator.

Abstract: A wireless power system includes a power source, power receiver, and components thereof. A current sensor senses the amount of current through the antenna. That amount of current is then used to adjust characteristics of the transmitting or receiving.

Abstract: Wireless power transfer is received using a magneto mechanical system. A magneto mechanical system may include an array of magneto-mechanical oscillators, wherein each oscillator may comprise a magnetic symmetrical part and a suspension engaged to the magnetic part. The system may further include a coil formed around the array and electromagnetically coupled to the oscillators to produce an electric current caused by electromagnetic coupling with the oscillators.

Abstract: Systems, methods and apparatus are disclosed for wireless power transfer and data transfer. In one aspect a power transmission apparatus is provided. The power transmission apparatus includes a transmitter configured to wirelessly transmit power via a wireless power transfer field at a level sufficient to power or charge an electric vehicle. The power transmission apparatus further includes a controller circuit configured to establish a first wireless communication link with the electric vehicle. The controller circuit is further configured to establish a second wireless communication link with the electric vehicle in response to detecting that the electric vehicle is being charged.

Abstract: Optimizing a wireless power system by separately optimizing received power and efficiency. Either one or both of received power and/or efficiency can be optimized in a way that maintains the values to maximize transferred power.