Miniaturized, low power FGMOSFET radiation sensor and wireless dosimeter system

Muhammad Arsalan (Inventor), Atif Shamim (Inventor), Nicholas Garry Tarr (Inventor), Langis Roy (Inventor)

Research output: Patent


A miniaturized floating gate (FG) MOSFET radiation sensor system is disclosed, The sensor preferably comprises a matched pair of sensor and reference FGMOSFETs wherein the sensor FGMOSFET has a larger area floating gate with an extension over a field oxide layer, for accumulation of charge and increased sensitivity. Elimination of a conventional control gate and injector gate reduces capacitance, and increases sensitivity, and allows for fabrication using standard low cost CMOS technology. A sensor system may be provided with integrated signal processing electronics, for monitoring a change in differential channel current I.sub.D, indicative of radiation dose, and an integrated negative bias generator for automatic pre-charging from a low voltage power source. Optionally, the system may be coupled to a wireless transmitter. A compact wireless sensor System on Package solution is presented, suitable for dosimetry for radiotherapy or other biomedical applications.
Original languageEnglish (US)
Patent numberUS 8519345 B2
StatePublished - Aug 27 2013

Bibliographical note

KAUST Repository Item: Exported on 2019-02-13


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