A power transmission apparatus has a first communication function for communicating with a power reception apparatus and a second communication function for communicating with the power reception apparatus at a radio frequency different from a radio frequency used in the first communication function, and makes a decision as to whether to use the first communication function or the second communication function in communication for controlling wireless transmission of power, the decision being made on the basis of device information obtained from the power reception apparatus through communication using the first communication function.

Disclosed is a coil for wirelessly transmitting or receiving power. The coil includes a coil unit formed by winding a plurality of wires insulated from each other; and a capacitor connected to the coil unit. The wires of the coil unit are shorted at a predetermined interval.

A system for enabling signal penetration into a building comprises first circuitry, located on an outside of the building, for receiving RF signals and converting the RF signals into a format that overcomes losses caused by penetrating a structure of the building over a wireless communications link. The first circuitry further comprises a first transceiver dongle including a signal processing chipset for converting the received RF signals to the format that overcomes the losses occurring when the signals penetrate the structure of the building. Second circuitry, located on the interior of the building, receives the signals in the format that overcomes the losses caused by penetrating the structure of the building over the wireless communications link and converts the signals to a second format for transmission to the wireless devices within the building. The second circuitry further comprises a second transceiver dongle including the signal processing chipset for converting the received signals in the format that overcomes the losses caused by penetrating into the interior of the building into the second format.

A device is provided that includes a processor configured to identify a power transferring device and to determine a range configuration relative to the power transferring device, and to determine a power status of the device. The device also includes a first antenna configured to receive an oscillating power signal from the power transferring device at a first selected frequency based on the range configuration relative to the power transferring device, and on the power status of the device, and a first rectifier circuit configured to convert the oscillating power signal from the first antenna at the first selected frequency into a direct-current signal to charge a device load. A method for using the above device is also provided.

A method for transmitting at least one of electrical power and signals between a wall and a leaf which can be pivoted relative to the wall. The method includes providing a transmission device, detecting a magnetic field strength in surroundings of the transmission device, and generating a fault signal when the magnetic field strength exceeds a threshold value.

The present invention relates to a wireless communication system with an energy transmission function. An output terminal of a control module is connected with an input terminal of an LVDS conversion module and an input terminal of a MOS driving module, respectively. An output terminal of the MOS driving module is connected with an input terminal of a MOS power amplifier module. The MOS power amplifier module is electrically connected with a power supply. An output terminal of the MOS power amplifier module is connected with an input terminal of an electric-to-magnetic conversion module. The input terminal of the electric-to-magnetic conversion module is also connected with an output terminal of the LVDS conversion module. An output terminal of an electric-to-magnetic conversion module is connected with an input terminal of a magnetic-ring coupling module. An output terminal of the magnetic-ring coupling module is connected with an input terminal of a magnetic-to-electric conversion module. An output terminal of the magnetic-to-electric conversion module is connected with an input terminal of a rectifier and voltage regulator module and an input terminal of a TTL signal conversion module, respectively; an output terminal of the TTL signal conversion module is connected with an input terminal of a receiving module, and an output terminal of the rectifier and voltage regulator module is connected with the an input terminal of the voltage output module. The embodiment is simple in structure and high in efficiency.

A power conversion system comprising a system controller configured to generate an input signal in response to a system input and a switch controller coupled to the system controller, the switch controller configured to control a power switch. The switch controller comprises a driver interface configured to receive the input signal that indicates whether the power switch should be ON or OFF, the driver interface further configured to transmit one or more current pulses across a galvanic isolation using an inductive coupling. The driver interface further comprises a first local power supply configured to increase an output voltage of the first local power supply when a transmission of current pulses is imminent.

A control device controls a first power transmission driver that applies a first drive signal to a first primary coil and a second power transmission driver that applies a second drive signal to a second primary coil. When intermittent power transmission is performed by applying the second drive signal in a period in which normal power transmission is performed by applying the first drive signal, a controller of the control device sets the phase difference between the first drive signal and the second drive signal to a predetermined phase difference.

A package substrate includes a first metal layer, a second metal layer, isolation material containing the first and second metal layers, an isolation circuit, a first plurality of contact pads, and a second plurality of contact pads. The isolation circuit includes a first circuit element in the first metal layer and a second circuit element in the second metal layer and electrically isolated from the first circuit element by the isolation material. The first plurality of contact pads is adapted to be coupled to a first integrated circuit on the package substrate and includes a first contact pad coupled to the first circuit element. The second plurality of contact pads is adapted to be coupled to a second integrated circuit on the package substrate and includes a second contact pad coupled to the second circuit element.

This communication apparatus makes it possible to have a non-contact charging module and a sheet antenna coexist, even in the case where there the non-contact charging module and the sheet antenna in the communication apparatus. The apparatus is provided with: a housing; a secondary-side non-contact charging module, which is housed in the housing, receives power by means of electromagnetic induction, and has a first coil having a conducting wire wound thereon, and a first magnetic sheet facing the first coil; and an NFC antenna, which is housed in the housing, and has a second coil having a conducting wire wound thereon, and a second magnetic sheet facing the second coil. The secondary-side non-contact charging module and the NFC antenna are not laminated to each other.