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A new configurable wireless sensor system for biomedical applications with ISO 18000-3 interface in 0.35 µm CMOS

: Fedtschenko, Tatjana; Utz, Alexander; Stanitzki, Alexander; Hennig, Andreas; Lüdecke, André; Haas, Norbert; Kokozinski, Rainer

Fulltext ()

Sensors. Online journal 19 (2019), No.19, Art. 4110, 17 pp.
ISSN: 1424-8220
ISSN: 1424-8239
ISSN: 1424-3210
Journal Article, Electronic Publication
Fraunhofer IMS ()
biosensor; potentiostat; amperometry; wireless; radio frequency identification (RFID); near field communication (NFC); 13.56 MHz; ISO 18000-3

This article presents a new configurable wireless sensor system. The system is used to perform amperometric measurements and send the measurement data to a handheld reader using a wireless transponder interface. The two-chip sensor system was implemented in a 0.35 μm CMOS technology. The system consists of an integrated nano-potentiostat that performs the actual measurements and an ISO 18000-3 compliant frontend that enables wireless telemetric data transmission and powering of the entire sensor system. The system was manufactured in combination with a chronoamperometric glucose sensor which allows the measurement of the glucose content in tear fluid and thus a non-invasive determination of the blood sugar level. For a range of sensor currents from 0.1 μA to 10 μA, the potentiostat achieved an accuracy of better than 5 % with a total power dissipation of less than 600 μW. With the realized antenna geometry a wireless communication distance of more than 7 cm has been achieved.