Wireless power transmission systems and methods with selective signal damping at periodic active mode windows

    公开(公告)号:US12199700B2

    公开(公告)日:2025-01-14

    申请号:US18482640

    申请日:2023-10-06

    Abstract: A method for operating a wireless power transmission system includes providing a driving signal for driving a transmission antenna of the wireless power transmission system, the driving signal based, at least, on an operating frequency for the wireless power transmission system. The method further includes inverting, by the at least one transistor, a direct current (DC) input power signal to generate an AC wireless signal at the operating frequency, based on provided driving signals. The method includes receiving, at a damping circuit, damping signals configured for switching the damping transistor to one of an active mode and an inactive mode to control signal damping, wherein the damping signals switch to the active mode periodically. The method further includes selectively damping, by the damping circuit, the AC wireless signals, during transmission of the wireless data signals if the damping signals set the damping circuit to the active mode.

    Systems and Methods for Dynamically Tuning a Wireless Power Transfer System

    公开(公告)号:US20240372406A1

    公开(公告)日:2024-11-07

    申请号:US18778704

    申请日:2024-07-19

    Abstract: A wireless power transmission system includes a voltage regulator, an inverter, a capacitor circuit, an antenna, and a controller. The inverter receives a first alternating current (AC) signal that has a configurable frequency and produces a configurable supply voltage. The inverter produces a second AC signal based on the first AC signal and the configurable supply voltage. The second AC signal has the configurable frequency and a configurable power level that corresponds to the configurable supply voltage. The capacitor circuit includes two or more capacitors and is configured to, based on a configuration state of the bank of two or more capacitors, tune the second AC signal with the bank of two or more capacitors and thereby produce a third AC signal. The controller is configured to define the configurable frequency, define the level of the configurable supply voltage, and define the configuration state.

    Wireless Power Transmitter For High Fidelity Communications At High Power Transfer

    公开(公告)号:US20240348288A1

    公开(公告)日:2024-10-17

    申请号:US18400857

    申请日:2023-12-29

    CPC classification number: H04B5/79 H02J50/12 H02J50/20 H02J50/80 H04L27/02

    Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a damping circuit, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of the wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.

    Low Cost Communications Demodulation for Wireless Power Receiver System

    公开(公告)号:US20240223024A1

    公开(公告)日:2024-07-04

    申请号:US18487473

    申请日:2023-10-16

    CPC classification number: H02J50/80 H02J50/12 H04B5/79 H04L27/06 H04B5/26

    Abstract: A wireless receiver system includes a receiver antenna, a sensor, a demodulation circuit, and a receiver controller. The sensor is configured to detect electrical information associated with AC wireless signals, the electrical information including, at least, a voltage of the AC wireless signals. The demodulation circuit is configured to receive the electrical information from the at least one sensor, detect a change in the electrical information, determine if the change in the electrical information meets or exceeds one of a rise threshold or a fall threshold, if the change exceeds one of the rise threshold or the fall threshold, generate an alert, and output a plurality of data alerts. The receiver controller is configured to receive the plurality of data alerts from the demodulation circuit, and decode the plurality of data alerts into the wireless data signals.

    THROUGH HEADBAND WIRELESS POWER TRANSFER SYSTEM FOR WEARABLE COMMUNICATION DEVICES

    公开(公告)号:US20240147123A1

    公开(公告)日:2024-05-02

    申请号:US17976023

    申请日:2022-10-28

    CPC classification number: H04R1/1025 H02J50/27 H04R2420/07

    Abstract: A wireless power transfer system, for charging a wearable communication device, includes a headset, which includes a headband, at least one earcup, and a receiver antenna configured to receive a power signal, wherein the receiver antenna is positioned proximate to or within the headband. The system further includes a charging base, which includes a transmission antenna, configured to transmit the power signal to the receiver antenna, and a housing. The housing includes a support arm and a base, wherein the transmission antenna is positioned proximate to or within one or more of the support arm, the base, and combinations thereof, and wherein the support arm is configured to retain the headband and position the receiving antenna to receive the power signal from the transmitting antenna.

    WIRELESS POWER TRANSFER SYSTEM FOR WEARABLE COMMUNICATION DEVICES

    公开(公告)号:US20240147122A1

    公开(公告)日:2024-05-02

    申请号:US17976020

    申请日:2022-10-28

    Abstract: A wireless power transfer system, for charging a wearable communication device, includes a headset, which includes a headband, at least one earcup, and a receiver antenna configured to receive a power signal, wherein the receiver antenna is positioned proximate to or within the headset. The system further includes a charging base, which includes a transmission antenna, configured to transmit the power signal to the receiver antenna, and a housing. The housing includes a support arm and a base, wherein the transmission antenna is positioned proximate to or within one or more of the support arm, the base, and combinations thereof, and wherein the support arm is configured to retain the headband and position the receiving antenna to receive the power signal from the transmitting antenna.

    Communications modulation in wireless power receiver with multi-coil receiver antenna

    公开(公告)号:US11955819B2

    公开(公告)日:2024-04-09

    申请号:US17518383

    申请日:2021-11-03

    CPC classification number: H02J50/80 H02J50/27 H02J50/402

    Abstract: A wireless power receiver system includes a receiver antenna including a plurality of receiver coils, each of the plurality of receiver coils configured to receive alternating current (AC) wireless power signals from a wireless power transmission system. The system further includes a receiver controller configured to generate communications signals. The system further includes a plurality of modulation circuits, each of the plurality of modulation circuits operatively associated with one of the plurality of receiver coils and the receiver controller, each of the plurality of modulation circuits configured to partially dampen a magnetic field, coupling the wireless power receiver system with the wireless power transmission system, based on the communication signals provided to each of the plurality of modulation circuits by the receiver controller.

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