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A 0.18 μm CMOS Low-Dropout (LDO) Voltage Regulator is proposed in this paper for battery-operated measurement systems. With a quiescent current of only 7 μA, it supplies a 1.8 V output voltage from a 3.6 V to 1.9 V battery input voltage, featuring a line regulation of 0.00647 mV/V and a load regulation of 0.0024 mV/mA for a load current of 50 mA over a 100 pF load. Further, thanks to the use of a...
This paper presents a conditioning system for an amorphous silicon germanium (a-SiGe:H, B) microbolometer array for detection of heat sources in low-power sensing systems. It mainly consists of an amplification and switching circuit that adapts the small signal provided by the resistive microbolometer cell connected in a Wheatstone bridge to a voltage signal which can be easily read by a microcontroller...
The use of wireless sensor networks for monitoring physical and chemical parameters in large regions far from populations allows for real-time monitoring with high levels of spatial resolution. This paper presents WubiNet, a wireless network designed for monitoring large regions. Depending on the available infrastructures, the network can be operating for two years using only batteries, or its coordinator...
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