Miniaturized, low power FGMOSFET radiation sensor and wireless dosimeter system


Patent Status
Granted Patent

Arsalan, Muhammad
Shamim, Atif
Tarr, Nicholas Garry
Roy, Langis

King Abdullah University of Science and Technology

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division


Submitted Date

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.

Patent Number
US 8519345 B2

Application Number
US 20100096556 A1

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