A power transmitter includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power timing request to an external power supply, and determine if the timing of the external power supply is compliant if the power timing request is met within a timing interval. The coil is configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face. The shielding comprises a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.

Proposed is a combo antenna module which laminates a loop coil and an antenna sheet to configure a combo antenna, thereby preventing the degree of design freedom from being lowered and minimizing the manufacturing cost. The proposed combo antenna module includes a magnetic sheet, a loop coil disposed on the upper surface of the magnetic sheet, and an antenna sheet having the area smaller than that of the magnetic sheet, and disposed on the upper surface of the magnetic sheet, in which the antenna sheet overlaps a part of the loop coil.

A multi-transmitting multi-receiving magnetic-resonance wireless charging system for a medium-power electronic apparatus includes a magnetic-resonance transmitting module and a magnetic-resonance receiving module. The magnetic-resonance transmitting module includes a transmitting-end Bluetooth-communication and control module and at least two magnetic-resonance transmitting channels. Each magnetic-resonance transmitting channel includes a direct current/direct current (DC/DC) regulator module, a radio-frequency power amplifier source, a matching network and a magnetic-resonance transmitting antenna which are connected sequentially. The magnetic-resonance receiving module includes a receiving-end Bluetooth-communication and control module, a power synthesis and protocol module and at least two magnetic-resonance receiving channels. Each magnetic-resonance receiving channel includes a magnetic-resonance receiving antenna, a receiving-antenna matching network, a rectifier and filter module, a primary regulator and filter module and a secondary regulator and filter module which are connected sequentially. The magnetic-resonance transmitting antenna is coupled with the magnetic-resonance receiving antenna in one-to-one correspondence.

A surface mount device inductor has a package casing sized to attenuate electromagnetic coupling between the inductor coils of the surface mount device inductors. The surface mount device inductor includes an inductor coil, an anode structure disposed over a first end of the inductor coil and a cathode structure disposed over a second end of the inductor coil opposite the first end, the cathode structure being spaced apart from the anode structure. One or both of the anode structure and the cathode structure comprise a shield portion disposed at least partially over the inductor coil to thereby reduce electromagnetic coupling between adjacent surface mount device inductors. The package casing makes the surface mount device inductors self-shielding. The surface mount device inductors can be incorporated into a radiofrequency module, and can be incorporated into a front end system of a wireless mobile device.

Apparatus, system and method to provide switchable coils in a computing device, comprising: a plurality of electrically conductive coils to transfer electromagnetic energy; a sensor coupled to a processor, to select a coil from among the plurality of electrically conductive coils; a switch to energize the selected coil; and a switch controller coupled to the switch and to the processor. In some embodiments, the plurality of coils may comprise an inductive charging interface. Some embodiments may further include a communication interface between the processor to the plurality of electrically conductive coils, the plurality of coils comprising an interface for near-field communications (NFC). The antenna coils may be arranged to provide improved NFC coverage when the computing device is in a respective predetermined physical configuration. Sensors may be used to detect the configuration and switch NFC communications to use a preferred antenna coil for the detected configuration.

Wireless power may be transferred between systems that are magnetically coupled in reactive near-field proximity. A magnetic field between a first antenna and a second antenna are coupled. The first and second antenna are (i) resonant at an operating frequency, and (ii) located within reactive near-field proximity. The reactive near field proximity represents a region that is less than a distance of 0.159 of the free space wavelength for the operating frequency. The wireless power provides a receiving system with a threshold amount of wireless inductive power exceeding 1 watt. Each of the first and second antennas have a spherical volume with a diameter less than 1/20 of the free space wavelength of the operating frequency and the energy dissipated to far-field radiation, per cycle, due to circulating currents from the first antenna is less than ½ the peak energy stored in the magnetic field.

Disclosed is a contactless connector, a signal processing method and a storage medium. The contactless connector can be in communication connection to a plug matched with the contactless connector. The plug is provided with a second magnetic core and a second coil, and the second coil is spirally arranged at the periphery of the second magnetic core and forms a secondary coil with the second magnetic core. The contactless connector includes: at least two plug interfaces, each of the plug interfaces including a first magnetic core; and a first coil, spirally arranged at an inner periphery of the first magnetic core of each of the plug interfaces and forming a main coil with the first magnetic core. When the contactless connector and a plurality of plugs are connected through at least two plug interfaces, the main coil and the secondary coil are electromagnetically coupled to realize communication connection between the contactless connector and the plurality of plugs. According to the present application, it can be achieved that the wiring difficulty between devices may be reduced while the service life of the connector is ensured.

An electronic device according to various embodiments may include: a housing; a communication module comprising circuitry coupled to at least one surface of the housing configured to be connected to an external device including multiple near field communication (NFC) antennas; and a processor, wherein the processor may be configured to: obtain device information of the external device from the external device based on the external device being coupled; generate antenna setting information for setting the multiple NFC antennas of the external device based on at least one of the device information of the external device and device information of the electronic device; and control the electronic device to transmit the generated antenna setting information to control the setting of the multiple NFC antennas.

An electronic device for supporting power sharing and data communication with an external electronic device, and a method therefor are provided. The electronic device includes a power management circuit, an antenna including a first coil and a second coil, a transceiver circuit configured to transmit a power signal received from the power management circuit to the antenna and to transmit a power signal received from the antenna to the power management circuit, the transceiver circuit including a first transceiver terminal and a second transceiver terminal, a first switch, and a control circuit electrically connected to the first switch and the transceiver circuit. A first end of the second coil may be connected to the first transceiver terminal. A second end of the second coil may be connected to the second transceiver terminal. A first end of the first coil may be connected to the first transceiver terminal through the first switch. A second end of the first coil may be connected to the second transceiver terminal. The control circuit may be configured to control the first switch based on identification information of an external electronic device received from the antenna through the transceiver circuit.

An antenna, in particular a magneto-inductive antenna, for a hearing instrument as well as a hearing instrument having such an antenna are provided. The antenna has a first antenna surface and a second antenna surface, which are respectively formed from a flexible magnetic foil. The antenna furthermore has a base, which is formed from a magnetic material or contains a magnetic layer, and which connects the two antenna surfaces to one another. The two antenna surfaces are angled off from the base in the same direction. Lastly, the antenna contains an antenna winding which has at least one first monolayer spiral coil and is arranged, in particular applied, externally on the first antenna surface so that an axis of the first spiral coil is oriented perpendicularly with respect to the first antenna surface.