Leland Stanford Junior University

Marcus J Weber

Mohammad Amin Arbabian

Jayant Charthad

Ting Chia Chang

Efficient power transmission from an acoustic transmitter to an electrical load on an implanted device is provided using a control system that at least varies the transmitted acoustic frequency. Varying the transmitted frequency can change the electrical impedance of the acoustic transducer in the receiver that receives power from the transmitter. This ability to vary the transducer impedance can be used to optimize power delivery to the load.

Dynamic reconfiguration for maximizing the overall link efficiency of energy receivers in a reliable implantable system

A wireless powering and communication system is provided that includes a base unit, and an external unit that is separate from the base unit, where the base unit includes a single transducer circuit configured for uplink data communication to the external unit, where the transducer circuit is configured for power recovery from the external unit, a multiplexer circuit, a power recovery and conditioning circuit, a controller circuit, and a communication circuit, where the multiplexer circuit is configured to decouple power and data paths to enable operation with the single transducer circuit, the power recovery and conditioning circuit is configured to recover and optionally store power from power received by the single transducer circuit, the power recovery and conditioning circuit is configured to power the controller circuit and the communication circuit, the controller circuit is configured to control the multiplexer circuit, the communication circuit is configured to provide data to the multiplexer circuit.

Single transducer for data and power in wirelessly powered devices

Aspects of the present disclosure are directed toward apparatuses, systems, and methods that include a base unit and a communication circuit that communicate, while implanted in a patient, signals between the patient and at least one device located external to the patient. The base unit also includes a transducer that communicates ultrasound (US) signals between the base unit and the at least one device located external to the patient, and harvests energy carried by the US signals.

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Palo Alto, CA, United States of America

Marcus J Weber