Leland Stanford Junior University

Ting Chia Chang

Mohammad Amin Arbabian

Jayant Charthad

Marcus J Weber

Max Li-Hua Wang

Chun-Ming Ernest So

A hybrid RF-acoustic relay is provided where some but not all of the incident RF power is rectified to power the relay and, optionally, to provide power for further link features. The remaining fraction of the incident RF power is used to directly drive an acoustic transceiver array in communication with one or more acoustically powered nodes. In this manner, power, control and communication can be efficiently provided to acoustically powered nodes even in situations where an RF link or an acoustic link would perform poorly.

RF-ultrasound relay for efficient power and data transfer across interfaces

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.

Growing community of inventors

Stanford, CA, United States of America

Ting Chia Chang