MM-Sized Brain Implantable Devices

  • Large distributed arrays of free floating sub-mm sized implantable device have been proposed as the next generation of high spatial and temporal recording and stimulation technology in neuroscience. As the increasing number of implants, the new challenges in the design of the implant raises, including power transfer and data communication link. In our lab, we propose a co-design methnology between external device and mm-sized brain for optimal power transfer efficiency. Inductively coupling link based on backscattering technology and capacitive coupling link is investigated for data communication between free floating mm-sized brain Implants. Our method has direct influence on next generation neural link to appease bandawidth and increase data rate.

Indoor Backscattering Tag-to-Tag Network Applications

  • The ongoing advances in the Internet of Thing (IoT) releases the indoor object identification due to their precise localization and tracking. We have developed passive tags based on backscattering technology, including PCB prototype, integrated wake-up, demodulator, multi-channel RF switch and power harvesting circuit. Compared with existing technology using active reader, our platform can save power and reduce complexity of circuit design. Our passive tags are available for indoor localization and doppler shift test.