NDLI: A Simple 250 Degrees Celsius Frequency Modulation Transmitter for use in Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Gagnon, J. Gagnon, F. Munger, O.
Copyright Year	2009
Abstract	This paper presents a voltage-controlled oscillator (VCO) operating up to 250°C and usable as a simple frequency modulation (FM) transmitter in wireless sensor networks (WSN). The device is a simple LC oscillator which uses the channel depletion capacitance as a variable capacitor controlled by the gate voltage VG to enable the sustained oscillating behaviour of a tank circuit. The context of operation, failure mechanisms and limitations of electronic components in high temperature environments are studied. The designed component operates successfully in the frequency range from 48 to 62 MHz at room temperature and 56 to 59 MHz at 250°C. Output powers have been measured from -30 dBm to -10 dBm. The proposed circuit enables frequency modulation for wireless communications in the context of ruggedized wireless sensor networks, that is, sensor networks which are designed to operate in very harsh conditions such as fire fighting and industrial applications.
Starting Page	11
Ending Page	15
File Size	418465
Page Count	5
File Format	PDF
ISBN	9780769538327
DOI	10.1109/CENICS.2009.22
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-11
Publisher Place	Malta
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency modulation Voltage-controlled oscillator Circuits Capacitors Voltage control Temperature sensors Wireless sensor networks Transmitters Wireless communications Voltage-controlled oscillators High-temperature electronics Sensor networks Capacitance Electric variables control
Content Type	Text
Resource Type	Article

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