A near-field communication (NFC) antenna structure for radiation enhancement of a computing device that includes a ferrite sheet, separated into two sections. The NFC antenna structure may be used to improve (i) the magnetic field strength generated by an NFC antenna and (ii) inductive coupling to a receiving antenna of another computing device. A first ferrite section may be placed on a first side of the NFC antenna to at least partially overlap the NFC antenna, and a second ferrite section may be placed on a second side (opposite the first side) to at least partially overlap the NFC antenna. The first ferrite section may be positioned towards a top end that is often positioned closest to a receiving device, as held by a user when performing a contactless communication of the computing device, to increase the magnetic field strength and improve the inductive coupling at the top end.

An information handling system with a wireless charging device may include a processor; a memory; a power management unit (PMU); an antenna controller to provide instructions to a radio to cause an antenna to transceive wirelessly with a network; a wireless charging scheduling controller configured to: receive transmission scheduling data from the antenna controller descriptive of when the radio is transmitting and receiving data to and from the network; and initiate, at a charging coil of the wireless charging device, a charging procedure to wirelessly charge a power storage device when the transmission scheduling data indicates that the radio is receiving data from the network or is idle.

Duty cycles of pulse width modulation (“PWM”) pulses are determined by measurements taken with respect to an internally generated clock signal. One of these measurements calculates, in a continuous dynamic manner, a ratio of the number of cycles of the internally generated clock signal to one or more cycles of a PWM clock signal utilized as a time base for generation of the PWM pulses. This clock ratio measurement designates how many cycles of the internally generated clock signal will be used to designate a first portion of a duty cycle for each PWM pulse. Another measurement is utilized to determine a fractional portion of a cycle of the internally generated clock signal that will be used to designate a second portion of the duty cycle for each PWM pulse.

The present application describes a wireless power reception device comprising: a power pickup circuit configured to receive, from a wireless power transmission device, a wireless power generated on the basis of magnetic coupling in a power transmission phase; and a communication and control circuit configured to transmit, to the wireless power transmission device, a configuration packet including first dual data stream information, or to receive, from the wireless power transmission device, a capability packet including second dual data stream information. Upper layer data can be effectively exchanged by clearly recognizing whether the upper layer data is bidirectionally transmitted between the wireless power transmission device and the wireless power reception device, and accuracy of power loss and saving of processing resources can be achieved by synchronizing the timing of calculating the power loss between the wireless power transmission device and the wireless power reception device.

A method and apparatus are provided for controlling wireless power in a wireless power network managed by a wireless power transmitter. The control method includes registering a wireless power receiver to a wireless power network corresponding to the wireless power transmitter; applying a charging power for charging the wireless power receiver to a resonator of the wireless power transmitter; detecting a change of magnitude of power applied to the resonator; detecting that a communication unit of the wireless power transmitter fails to receive a communication signal from the wireless power receiver a predetermined time; and in response to detecting the change of the magnitude of power applied to the resonator and that the communication unit fails to receive the communication signal from the wireless power receiver in the predetermined time, removing the wireless power receiver from the wireless power network.

A power reception device includes a power reception antenna used for communication and electric power reception; a rectifier circuit connected to the antenna, the rectifier circuit converting into direct current voltage, electric power received by the antenna, and the direct current voltage is output and supplied to a load; a communication section which communicates via the antenna; a switch circuit connected between the antenna and the communication section, wherein the switch circuit is transitable between a conductive state in which the communication section is electrically connected to the antenna and a cut-off state in which the communication section is electrically disconnected from the antenna; and a switch control section connected to the rectifier circuit. The switch control section transitions the switch circuit into the cut-off state when the direct current voltage output from the rectifier circuit exceeds a first threshold in association with start of the electric power reception by the antenna, and the switch control section performs transition of the switch circuit into the conductive state when the direct current voltage falls below a second threshold different from the first threshold. During signal sending by the communication section via the antenna, the switch control section does not transition the switch circuit into the cut-off state even when the direct current voltage output from the rectifier circuit exceeds the first threshold; and during the signal sending by the communication section via the antenna, the switch control section transitions the switch circuit into the cut-off state when the direct current voltage exceeds a third threshold larger than the first threshold.

Dynamic power control embodiments concern a data processing pipeline. First and second pipeline stages respectively receive first and second clock signals. The first and second pipeline stages are configured to perform first and second operations respectively triggered by first timing edges of the first clock signal and second timing edges of the second clock signal. A clock controller is configured to generate the first and second clock signals. The clock controller is capable of operating in a first mode in which, during a first data processing cycle of the data processing pipeline, a first of the first timing edges is in-phase with a first of the second timing edges. The clock controller is also capable of operating in a second mode in which, during a second data processing cycle of the data processing pipeline, a second of the first timing edges is out of phase with a second of the second timing edges.

A method for execution by a RFID tag includes receiving, from an RFID reader, an RF signal, where the RF signal has a carrier frequency of a plurality of carrier frequencies that span a broad frequency band. The method further includes adjusting input impedance of the RFID tag over a range of input impedances, where the input impedance of the RFID tag is based on one or more of impedance of the RFID tag's antenna and tank circuit. The method further includes monitoring power level of the received RF signal over the range of input impedances. The method further includes selecting the input impedance of the range of input impedances providing a substantially maximum power level of the received RF signal, where the substantially maximum power level corresponds to the carrier frequency being substantially equal to a resonant frequency of at least one of the antenna and the tank circuit.

A magnetic alignment system can include a primary annular magnetic alignment component and a secondary annular magnetic alignment component. The primary alignment component can include an inner annular region having a first magnetic orientation, an outer annular region having a second magnetic orientation opposite to the first magnetic orientation, and a non-magnetized central annular region disposed between the primary inner annular region and the primary outer annular region. The secondary alignment component can have a magnetic orientation with a radial component.

A method of inductive power transmission by a transmitter and a receiver of an electrically operated device, the transmitter having at least one transmitter coil and the receiver having at least one receiver coil, a control for the power to be transmitted is provided in the transmitter, a minimum power is transmitted by the transmitter through the control at the start of a power transmission, the minimum transferring power is sufficiently dimensioned to activate a controller of the receiver of the electrically operated device. By influencing the field of the transmitter coil, the controller supplies data packets to the control that contain information about the electrically operated device so that an optimal power adapted to the power class of the device is transmitted by the transmitter.