A 0.18μm CMOS low-power radiation sensor for UWB wireless transmission

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Abstract

The paper describes the design of a floating gate MOS sensor embedded in a readout CMOS element, used as a radiation monitor. A maximum sensitivity of 1 mV/rad is estimated within an absorbed dose range from 1 to 10 krad. The paper shows in particular the design of a microelectronic circuit that includes the floating gate sensor, an oscillator, a modulator, a transmitter and an integrated antenna. A prototype of the circuit has recently been simulated, fabricated and tested exploiting a commercial 180 nm, 4 metal CMOS technology. Some simulation results are presented along with a measurement of the readout circuit response to an input voltage swing. Given the small estimated area of the complete chip prototype, that is less than 1 mm2, the chip fits a large variety of applications, from spot radiation monitoring systems in medicine to punctual measurements or radiation level in High-Energy Physics experiments. © 2012 IOP Publishing Ltd and Sissa Medialab srl.

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Crepaldi, M., Demarchi, D., Gabrielli, A., Khan, A., Pikhay, E., Roizin, Y., … Zhang, Z. (2012). A 0.18μm CMOS low-power radiation sensor for UWB wireless transmission. In Journal of Instrumentation (Vol. 7). https://doi.org/10.1088/1748-0221/7/12/C12019

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