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.
|Titolo:||A 0.18 μm CMOS Low-Power Radiation Sensor for UWB Wireless Transmission|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||10.1088/1748-0221/7/12/C12019|
|Appare nelle tipologie:||1.1 Articolo in rivista|