Abstract: An apparatus for wireless power reception in an electronic device may include a casing configured to house electronic components of the electronic device. The casing may include a non-conductive support substrate and a metal layer disposed on the support substrate. The apparatus may include a power receiving element configured to magnetically couple to an externally generated magnetic field to produce power for one or more of the electronic components of the electronic device.

Abstract: An apparatus for wirelessly coupling power via a first magnetic field may include an electrically conductive casing portion configured to generate a second magnetic field in response to eddy currents induced in the electrically conductive casing portion by the first magnetic field. The electrically conductive casing portion may include a non-conductive area and a first slot. A power receiving element wound around the non-conductive area and crossing over the first slots can couple to the second magnetic field to output electrical current to wirelessly power or charge a load.

Abstract: This invention describes a method and apparatus for providing wireless power. The methods and systems disclosed consist of a first coil having at least one loop forming an inner area inside boundaries of the at least one loop and an outer area outside the boundaries of the at least one loop, the first coil configured to generate a first alternating magnetic field for charging or powering a wireless power device, the first alternating magnetic field having a first magnetic field component with a first phase in the inner area, the first alternating magnetic field also having a second magnetic field component with a second phase in the outer area, and the second phase different from the first phase. In some aspects, the methods and systems comprise a second coil comprising a portion within the outer area, the second coil configured to reduce a magnitude of the second magnetic field component.

Abstract: A wearable apparatus configured to wirelessly receive charging power is provided. The apparatus comprises a band. The apparatus comprises a first receive coil wound in a clockwise direction along a first portion of the band as viewed from a direction normal to a cross section enclosed by the first receive coil. The apparatus comprises a second receive coil wound in a counterclockwise direction along a second portion of the band as viewed from the direction normal to the cross section. The apparatus comprises a parasitic coil overlapping a portion of the first receive coil and a portion of the second receive coil. The first receive coil is not electrically connectable to the second receive coil at distal ends of the band. The apparatus further comprises one or more resonant circuits comprising the first receive coil and the second receive coil.

Abstract: Disclosed is a wireless power transfer apparatus that includes a case for an electronic device. The case may have an electrically conductive panel portion and side portions defined along sides of the panel portion. The case further have at least one opening formed one of the side portions. A coil configured to couple to an externally generated magnetic field may have first segments that span a width of the panel portion of the case and second segments arranged along the side portions of the case and exposed through the at least one opening.

Abstract: Disclosed is a wireless charging system for a wearable device having a plurality of coils configured to couple to an externally generated magnetic field and provide power to an electronic component in the wearable device. The coils may include a first coil integrated with a device body of the wearable device and a second coil disposed in a portion of the wearable device that is configured to secure the wearable device to a user. The second coil may have a non-planar contour.

Abstract: A wireless power transfer system may include a primary resonator and one or more secondary resonators. At least one of the secondary resonators lie in overlapping relation to the primary resonator. An electromagnetic (EM) field generated by the primary resonator can couple to the secondary resonators, thus inducing current flow in the secondary resonators. EM fields generated by the secondary resonators interact with the EM field from the primary resonator to produce a resultant EM field.

Abstract: An apparatus for wireless charging may include a casing for housing an electronic device and a plurality of power receiving elements that can couple to an externally generated magnetic field to wirelessly power or charge a load in the electronic device. At least one of the power receiving elements may comprise an electrically conductive segment of the casing.

Abstract: An apparatus for wireless power transfer is disclosed. The apparatus may include a portion of a housing of an electronic device. The portion of the housing may include at least a first electrically conductive segment and a second electrically conductive segment spaced apart from the first electrically conductive segment. A coil of electrically conductive material may be arranged relative to the first and second electrically conductive segments. A power receiving element may include the coil of electrically conductive material and either or both the first and second electrically conductive segments.

Abstract: The present disclosure pertains to wireless chargers. In one embodiment, a 2×2 array of conductive coils produces magnetic fields. Adjacent coils receive current having different directions to cancel magnetic fields around a periphery of the array. A wireless charging platform may include at least four such coils. Regions between and above the coils may include magnetic fields approximately parallel to the surface of the platform so that electronic devices may be charged while standing up during operation by a user with reduced exposure to magnetic radiation. An electronic device may also be placed flat on each coil for charging.

Abstract: A method and system for providing wireless power transfer through a metal object by forming a loop conductor from the metal object through a feature or component embedded within the metal object and by replacing portions of the metal object with insulating components. The method and system utilize a recessed channel to install and isolate conductors that are connected to transmitter or receiver circuits and enable wireless power transfer and other communications. The recessed channel creates a loop around at least a portion of the metal object such that the conductor installed therein may form a loop conductor, which may be connected to a source or sink. In some implementations, a logo embedded within the metal object may create a loop formed by the metal object with a current path around the logo, wherein the metal object itself may be configured to operate as the conductor.

Abstract: A uniform magnetic field may provide better performance in wireless power transmitters due to smaller impedance variations in an output of a power amplifier of a wireless power transmitter and also allow for wireless power transmitter pads to be thinner. One aspect of the disclosure provides a device for wireless power transfer. The device comprises a substantially planar transmit antenna that is configured to generate a magnetic field. The device also comprises a pad having a charging surface. At least a portion of the transmit antenna is disposed in the pad. The device also comprises a ferromagnetic material having a shape and a position relative to the transmit antenna. At least one of the shape or position of the ferromagnetic material, or a combination thereof, is selected to modify a distribution of the magnetic field at the charging surface.

Abstract: Systems, apparatus and methods for seamless metal back cover for combined wireless power transfer, cellular, WiFi, and GPS communications are provided. In one aspect, an apparatus for wirelessly coupling with other devices comprises a metallic cover comprising a first metallic portion separated by a first non-conductive portion from a second metallic portion of the metallic portion to define a first slot. The apparatus further comprises a conductor comprising a first end portion electrically coupled to the metallic cover at the first metallic portion and a second end portion crossing the first end portion and electrically coupled to the metallic cover at the second metallic portion. The metallic cover and the conductor form a coupler configured to wirelessly receive power sufficient to charge or power a load of the apparatus from a wireless power transmitter.

Abstract: A method and system for providing wireless power transfer through a metal object is provided. In one aspect, an apparatus for wirelessly receiving power via a magnetic field is provided. The apparatus includes a metal cover including an inner portion and an outer portion. The outer portion is configured to form a loop around the inner portion of the metal cover. The outer portion is configured to inductively couple power via the magnetic field. The apparatus includes a receive circuit electrically coupled to the outer portion and configured to receive a current from the outer portion generated in response to the magnetic field. The receive circuit is configured to charge or power a load based on the current.

Abstract: Systems, methods and apparatus are disclosed for a dual mode wireless power receiver. In accordance with on aspect, an apparatus for receiving wireless power is provided. The apparatus includes a first coil configured to wirelessly receive power from a first transmitter configured to generate a first alternating magnetic field having a first frequency. The apparatus further includes a second coil configured to wirelessly receive power from a second transmitter configured to generate a second alternating magnetic field having a second frequency higher than the first frequency. The second coil is positioned to enclose the first coil. A first coupling factor between the first coil and a coil of the first transmitter is higher than a second coupling factor between the second coil and a coil of the second transmitter when the first and second coils are positioned within respective charging regions of the first and second transmitters.

Abstract: A multi-band antenna component is provided. The multi-band antenna component comprises a carrier, a first antenna array, and a second antenna array. The carrier is composed of a ceramic material characterized by a permittivity of at least about 6, said carrier having a first region and a second region distinct from the first region. The first antenna array is disposed on the first region and comprises one or more antennas selected from the group consisting of a first antenna adapted for about 2.4 GHz wireless communication, a second antenna adapted for about 5 GHz wireless communication, and a third antenna adapted for wireless communication for a global positioning system. The second antenna array is disposed on the second region and comprises at least one of a fourth antenna adapted for about 850 MHz wireless communication or a fifth antenna adapted for about 1800/1900 MHz wireless communication.

Abstract: A slot antenna with a filter network is provided. The slot antenna is connectable to an antenna feed, and configured to resonate at a first frequency when surface current from the antenna feed flows around the slot antenna, the slot antenna comprising a first side and a second side separated by a width. A filter network bridges the first side and the second side, across the width, at a given position from a surface-current-originating end of slot antenna, the filter network configured to: electrically isolate the first side from the second side at the first frequency so that a length of the slot antenna defines a resonant length of the slot antenna at the first frequency; and, electrically connect the first side to the second side at a second frequency higher than the first frequency, so that the surface current flows across the filter network at the given position.

Abstract: An antenna with a combined bandpass/bandstop filter network is provided. The antenna includes: a first radiating arm connectable to an antenna feed, the first radiating arm configured to resonate at a first frequency; a second radiating arm, the second radiating arm and the first radiating arm, when electrically connected, configured to resonate at a second frequency lower than the first frequency; and, a filter network comprising a bandstop filter and a bandpass filter, the filter network filtering an electrical connection between the first radiating arm and the second radiating arm, the filter network configured to: electrically isolate the first radiating arm from the second radiating arm at the first frequency, and electrically connect the first radiating arm and the second radiating arm at the second frequency.

Abstract: A device having a coupled-feed wideband antenna is provided. The device comprises: a chassis comprising as a ground plane; an antenna feed, a ground side of the antenna feed connected to the ground plane; and, an antenna comprising: a first radiating arm configured for generating a first resonance at a first frequency, the first radiating arm connected to the chassis and hence the ground plane; a second radiating arm configured for generating a second resonance at a second frequency higher than the first frequency, the second radiating arm connected to the ground plane; and a third radiating arm configured for generating a third resonance at a third frequency higher than the second frequency, the first radiating arm capacitively coupled to the third radiating arm, and the third radiating arm connected to a positive side of the antenna feed.

Abstract: A multi-band antenna component is provided. The multi-band antenna component comprises a carrier, a first antenna array, and a second antenna array. The carrier is composed of a ceramic material characterized by a permittivity of at least about 6, said carrier having a first region and a second region distinct from the first region. The first antenna array is disposed on the first region and comprises one or more antennas selected from the group consisting of a first antenna adapted for about 2.4 GHz wireless communication, a second antenna adapted for about 5 GHz wireless communication, and a third antenna adapted for wireless communication for a global positioning system. The second antenna array is disposed on the second region and comprises at least one of a fourth antenna adapted for about 850 MHz wireless communication or a fifth antenna adapted for about 1800/1900 MHz wireless communication.