Abstract:
A wireless power transmission apparatus includes a source resonator configured to transmit an output power from which a harmonic component has been cancelled to a wireless power reception apparatus by resonating with a target resonator of the wireless power transmission apparatus, and a resonant power generator configured to differentially input a first input signal and a second input signal to the source resonator, and cancel the harmonic component of the output power.
Abstract:
An electronic device includes a battery, a power regulator electrically connected with the battery and including an input terminal and an output terminal, a connector electrically connected with the input terminal, a wireless power transmitting circuit electrically connected with the output terminal, a switch electrically connected between the connector and the wireless power transmitting circuit, and a controller configured to identify an approaching external electronic device or a wireless charging-related request, identify whether power is provided from an external power supply via the connector in response to the identification, in response to identifying that power is not provided from the external power supply, supply power from the battery via the power regulator to the wireless power transmitting circuit, and in response to identifying that power is provided from the external power supply, supply the power provided from the external power supply to the wireless power transmitting circuit via the switch.
Abstract:
A wireless power transmission apparatus for tracking a charging capacity of each of a plurality of wireless power reception apparatuses in an environment in which the plurality of wireless power reception apparatuses are charged includes a communication unit configured to receive information about either one or both of a charging support power and a requested power from each of the plurality of wireless power reception apparatuses, a controller configured to determine a charging capacity for a wireless power reception apparatus supporting the charging support power among the plurality of wireless power reception apparatuses based on the information about the charging support power, and a power tracker configured to re-track the determined charging capacity based on charging status information received from the plurality of wireless power reception apparatuses.
Abstract:
An authentication of a power transmitting unit (PTU) includes determining whether an access right to an external device is present in a power receiving unit (PRU) based on identification information of the PRU, and network-connecting the PRU to the external device in response to a result of the determining being that the access right is present in the PRU.
Abstract:
A high efficiency variable power transmitting apparatus outputs a variable power by modulating, with respect to a time axis, a high frequency signal having a constant amplitude by turning the high frequency signal ON and OFF, amplifying the variable power to satisfy a requested power level of a target device based on a supply voltage having a predetermined level, converting an alternating current (AC) voltage received from a power source to a direct current (DC) voltage, generating the supply voltage having the predetermined level based on the DC voltage, and providing the supply voltage having the predetermined level to the PA.
Abstract:
A wireless power transmission system, and a method of controlling power in the wireless power transmission system based on a detection parameter are provided. The method includes transmitting a request signal to a device. The method further includes receiving, from the device, a response signal corresponding to the request signal, the response signal including a parameter of the device. The method further includes generating an operation power based on the parameter of the device, the operation power being used for an operation of the device.
Abstract:
A dual antenna for wireless communication transmission (WPT) and near field communication (NFC) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna.
Abstract:
A source device configured to transmit a magnetic field via magnetic resonance with a target device includes a source resonator including a plurality of loop circuits respectively configured to generate different magnetic fields each depending on a length of a corresponding one of the plurality of loop circuits, and a circuit selector configured to select one loop circuit among the plurality of loop circuits based on information associated with the target device.
Abstract:
An apparatus configured to transmit power, and transceive data, using mutual resonance, includes a power transmitter configured to wirelessly transmit power to a device, using a power transmission frequency as a resonant frequency. The apparatus further includes a communication unit configured to transceive data to and from the device, using a communication frequency as a resonant frequency. The apparatus further includes a controller configured to determine a charging state of the device based on the data received from the device, and control an amount of the power based on the charging state.
Abstract:
A wireless power transmission system and a multi-mode resonator in the wireless power transmission system are provided. The multi-mode resonator includes a transmission line portion including unit-cells, the unit-cells including respective ends connected to each other, and each of the unit-cells including a capacitor, an inductor connected in parallel to the capacitor, and a via. The multi-mode resonator further includes a ground conducting portion configured to provide an electrical ground to the transmission line portion through the via of each of the unit-cells.