Stanford University2014-11-24 11:35 AM

A mm-Sized Implantable Device with Ultrasonic Energy Transfer and RF Data Uplink for High-Power Applications

Abstract


A first proof-of-concept mm-sized implant based on ultrasonic power transfer and RF uplink data transmission is presented . The prototype consists of a 1 mm x 1 mm piezoelectric receiver , a 1 mm x 2 mm chip designed in 65 nm CMOS and a 2.5 mm x 2.5 mm off-chip antenna , and operates through 3 cm of chicken meat which emulates human tissue . 

The implant supports a DC load power of 100 µW allowing for high-power applications . It also transmits consecutive UWB pulse sequences activated by the ultrasonic downlink data path , demonstrating sufficient power for an M-ary PPM transmitter in uplink .


Full Article:

https://arbabianlab.stanford.edu/sites/default/files/cicc_2014_final.pdf

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