@inproceedings{fb32b52517c04169a7b55c6135b28801,
title = "A high-sensitivity fully-passive wireless neurosensing system for unobtrusive brain signal monitoring",
abstract = "A high-sensitivity, fully-passive and wireless neurosensing system is presented for unobtrusive brain signal monitoring. The system is able to wirelessly detect neuropotentials down to 28 μVpp in the frequency band of 100 Hz to 5 kHz. This is a 90-fold sensitivity improvement as compared to previous fully-passive implementations. Importantly, it implies detection of most neural signals generated by the human brain. The system consists of an implanted neurosensor and an exterior interrogator, and utilizes a highly-efficient microwave backscattering method for signal detection. High sensitivity is achieved via: (a) a sub-harmonic implanted mixer with high conversion efficiency, (b) a pair of highly-coupled implanted/interrogator antennas, and (c) a carefully matched interface between the implant antenna and mixer circuit. The proposed neurosensing system brings forward a new possibility of wireless neural signal detection using fully-passive technology.",
keywords = "Anti-parallel diode pair (APDP), biomedical telemetry, brain implants, neurosensing, passive circuits, sub-harmonic mixers",
author = "Lee, {Cedric W L} and Asimina Kiourti and Junseok Chae and Volakis, {John L.}",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE MTT-S International Microwave Symposium, IMS 2015 ; Conference date: 17-05-2015 Through 22-05-2015",
year = "2015",
month = jul,
day = "24",
doi = "10.1109/MWSYM.2015.7166939",
language = "English (US)",
series = "2015 IEEE MTT-S International Microwave Symposium, IMS 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2015 IEEE MTT-S International Microwave Symposium, IMS 2015",
}