A wireless power-feeding apparatus that enables efficient wireless feeding to a power-receiving coil embedded at the center of a spherical power-receiving device. The apparatus includes: a holding member for holding the power-receiving device; a power-transmitting coil; a driver circuit for supplying the power-transmitting coil with high-frequency current to generate a magnetic flux for wireless power-feeding to the power-receiving coil; and a wireless data receiver for receiving data transmitted regularly from a wireless data transmitter, the power-transmitting coil being positioned relative to the holding member in such a manner that the axes of the power-receiving coil and the power-transmitting coil are parallel to each other when the power-receiving device is held by the holding member in such a manner that a mark provided on the surface of the power-receiving device faces a predetermined direction.

Various embodiments of inductor coils, antennas, and transmission bases configured for wireless electrical energy transmission are provided. These embodiments are configured to wirelessly transmit or receive electrical energy or data via near field magnetic coupling. The embodiments of inductor coils comprise a figure eight configuration that improve efficiency of wireless transmission efficiency. The embodiments of the transmission base are configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device in contact with or adjacent to the transmission base.

A wireless power transmission apparatus is provided. The wireless power transmission apparatus includes a first coil including a first conductive wire area formed of an arrangement of conductive wires, and a first opening area surrounded by the first conductive wire area, a second coil including a second conductive wire area formed of an arrangement of conductive wires, and a second opening area surrounded by the second conductive wire area, a first overlapping area formed by overlapping a portion of the first conductive wire area with a portion of the second opening area, and a first shielding member disposed on at least a portion of the first overlapping area, wherein the first shielding member may be configured to at least partially block an electromagnetic field generated by the second coil interfering in the first conductive wire area.

A device for high-frequency communication and for the inductive charging of an apparatus, including a charging surface, at least one charging antenna emitting a magnetic field at a low frequency and a layer of ferromagnetic material. The device includes at least one communication antenna and a printed circuit board. The communication antenna is in the form of a coil locally surrounding the layer with an axis of symmetry located in a plane parallel to the layer. The material of the layer is selected so as to have, at high frequency, an imaginary part with sufficiently high permeability to generate leaks on a surface of the layer extending perpendicular to the layer, while at the same time maintaining, at low frequency, an imaginary part with sufficiently low permeability to allow inductive charging.

A magnetic structure for wireless power transfer has a plurality of pieces of magnetically permeable material arranged along a first dimension. Each piece is separated from a neighbouring piece by a gap defining a separation distance which is selected to prevent partial saturation of a region of the structure.

An apparatus for a transformer isolator used for transferring power to an element of a substrate support used in a plasma chamber is provided. A primary of the transformer isolator includes a primary base plate configured to electrically couple to ground. A primary ferrite disposed over the primary base plate, and the primary ferrite has a primary circular channel. A primary coil is wound within the primary circular channel. A primary shield is disposed over the primary ferrite and the primary coil. The primary shield includes a first plurality of radial segments that extend from a primary center region to outside a periphery of the primary ferrite. An extended region of the primary shield has a curved section to connect the primary shield with the primary base plate. In one example, the secondary of the transformer isolator has similar construction as the primary and are used together as part of the transformer isolator.

An apparatus for wireless power transfer includes a transmit antenna configured to generate a wireless field to power or charge a load, a wireless charging area configured to receive a device to be wirelessly charged via the wireless field, the transmit antenna located outside of a periphery of the wireless charging area, and at least one shielding element overlapping the transmit antenna on a side of the transmit antenna from which the device is configured to be positioned within the wireless charging area, the at least one shielding element configured to diminish at least a portion of the wireless field such that the wireless field in the wireless charging area is stronger than the wireless field where the at least one shielding element overlaps the transmit antenna.

Provided are an attractor for PMA wireless charging type wireless power reception module and a manufacturing method thereof, and a wireless power reception module having the same. The attractor for PMA wireless charging type wireless power reception module according to an embodiment of the present invention comprises: a wireless power reception module; and a thin magnetic piece formed of a magnetic material having a saturation magnetic flux density of 0.5 tesla or more such that a change in the voltage value of a hall sensor of a certain value or more can be detected in both an aligned state when a wireless power transmission module is aligned and a non-aligned state when the wireless power reception module is not in line with the wireless power transmission module within a non-alignment region having a certain area including the aligned state.

A first electronic device connects with an second electronic device. The first electronic device may include a first connection surface and an inductive power transfer receiving coil and a first magnetic element positioned adjacent to the first connection surface. The second electronic device may similarly include a second connection surface and an inductive power transfer transmitting coil and second magnetic element positioned adjacent to the second connection surface. In the aligned position, alignment between the electronic devices may be maintained by magnetic elements and the inductive power coils may be configured to exchange power. The magnetic elements and/or the inductive power coils may include a shield that is configured to minimize or reduce eddy currents caused in the magnetic elements by the inductive power coils.

A wireless charging coil is provided herein. More specifically, provided herein is a wireless charging coil comprising a first stamped coil having a first spiral trace, the first spiral trace defining a first space between windings, and a second stamped coil having a second spiral trace, the second spiral trace defining a second space between windings, the first stamped coil and second stamped coil in co-planar relation, the first stamped coil positioned within the second space of the second stamped coil, and the second stamped coil positioned within the first space of the first stamped coil, the first and second coils electronically connected and an adhesive covering and surrounding the first stamped coil and the second stamped coil to bond the coils together and to insulate the coils.