Abstract: A wireless power receiver is described that receives power wirelessly from a transmitter coil that generates an oscillating magnetic field. The wireless power receiver includes a receiving coil circuit having a diode string formed by an outer wire, an inner wire, and diodes. Each of the diodes include a first end coupled to the outer wire and a second end coupled to the inner wire such that each of the diodes are connected in parallel with one another. A rectifier circuit is coupled to ends of the diode string. The rectifier circuit includes capacitors and rectifying diodes, where at least one of the capacitors is configured to bring the diode string into resonance with the oscillating magnetic field. The rectifying diodes rectify the induced oscillating voltage to produce a DC voltage difference between the outer wire and the inner wire, thereby powering the diodes.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: A method for wireless power transfer. The method includes adapting a variable form factor transmitter into an adapted form factor based on a pre-determined wireless power transfer area, wherein the variable form factor transmitter in the adapted form factor comprises a characteristic frequency, maintaining the characteristic frequency to be substantially independent of the adapted form factor, and transmitting, from a radio frequency (RF) power source and based at least in part on the characteristic frequency, RF power across the pre-determined wireless power transfer area via a near electromagnetic field of the variable form factor transmitter.

Abstract: A wireless power receiver is described that receives power wirelessly from a transmitter coil that generates an oscillating magnetic field. The wireless power receiver includes a receiving coil circuit having a diode string formed by an outer wire, an inner wire, and diodes. Each of the diodes include a first end coupled to the outer wire and a second end coupled to the inner wire such that each of the diodes are connected in parallel with one another. A rectifier circuit is coupled to ends of the diode string. The rectifier circuit includes capacitors and rectifying diodes, where at least one of the capacitors is configured to bring the diode string into resonance with the oscillating magnetic field. The rectifying diodes rectify the induced oscillating voltage to produce a DC voltage difference between the outer wire and the inner wire, thereby powering the diodes.

Abstract: A radio frequency (RF) power source for use with a wireless power transmitter is provided. A direct current (DC) voltage supply of the RF power source supplies a substantially constant DC voltage to RF power source circuitry of the RF power source. A first node of the RF power source circuitry is electrically coupled to a first terminal of the DC voltage supply. The RF power source circuitry has first and second terminals that are electrically coupled to first and second terminals, respectively, of a resonant magnetic loop antenna of the wireless power transmitter circuit to provide an RF current having a constant amplitude to the resonant magnetic loop antenna.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: A power transmitter for wireless power transfer. The power transmitter includes (i) a material sheet encompassing a path based on a wireless power transfer area, and (ii) capacitors and inductive segments disposed along the path, mechanically supported by the material sheet, and connected in series into a string of distributed capacitors. Accordingly, the power transmitter is configured to transmit, from a RF power source and based at least in part on a characteristic frequency of the string of distributed capacitors, RF power across the wireless power transfer area via a near electromagnetic field of the string of distributed capacitors.

Abstract: A power transmitter for wireless power transfer. The power transmitter includes (i) a material sheet encompassing a path based on a wireless power transfer area, and (ii) capacitors and inductive segments disposed along the path, mechanically supported by the material sheet, and connected in series into a string of distributed capacitors. Accordingly, the power transmitter is configured to transmit, from a RF power source and based at least in part on a characteristic frequency of the string of distributed capacitors, RF power across the wireless power transfer area via a near electromagnetic field of the string of distributed capacitors.

Abstract: A method for wireless power transfer. The method includes adapting a variable form factor transmitter into an adapted form factor based on a pre-determined wireless power transfer area, wherein the variable form factor transmitter in the adapted form factor comprises a characteristic frequency, maintaining the characteristic frequency to be substantially independent of the adapted form factor, and transmitting, from a radio frequency (RF) power source and based at least in part on the characteristic frequency, RF power across the pre-determined wireless power transfer area via a near electromagnetic field of the variable form factor transmitter.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Described herein are embodiments of a wireless power receiver that includes a receive high-Q resonator configured to receive wireless power from a magnetic near field, the receive high-Q resonator that may include a first resonator and a second resonator wirelessly coupled to the first resonator. The wireless power receiver may be included in a non-contact power transmission apparatus that includes a resonance system, which may include a primary coil to which an oscillating voltage from a source is applied, a primary-side resonance coil, a secondary-side resonance coil, and a secondary coil to which a load is connected, wherein the impedance of the primary coil is set such that the output impedance of the oscillating source and the input impedance of the resonance system are matched to each other.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Abstract: In embodiments of the present invention improved capabilities are described for methods and systems for wireless power transmission utilizing high-Q resonators, where the resonators may resonate with an unmodulated carrier frequency, may be formed in a loop of conducting ribbon, may include an efficiency monitor, may provide for varying the amount of power transferred wirelessly, and applies a magnetic resonance phenomenon between a source and destination side resonator.

Abstract: Described herein are embodiments of a portable wireless power charger that includes a charging region including a high-Q source magnetic resonator configured to generate a magnetic near-field for coupling of wireless power to a wireless powered device including a high-Q receiver magnetic resonator, the high-Q source magnetic resonator substantially disposed around a perimeter of the charging region, and a cable for feeding input power to the high-Q source magnetic resonator.

Abstract: Described herein are embodiments of a transmitter system for wireless power that may include a high-Q resonator that may include an inductive element and a capacitor that are collectively magnetically resonant at a first frequency, and a coupling loop assembly, that may include a first coupling loop part adjustably connected to said high-Q resonator. Another embodiment of the transmitter system for wireless power may include a first high-Q magnetic resonator that may include an inductive element and a capacitor that are collectively magnetically resonant at a first frequency, said first high-Q magnetic resonator positioned for wirelessly supplying power to devices on the ground.