Title :
Characterization of 720 and 940 MHz oscillators with chip antenna for wireless sensors from room temperature to 200 and 250 °C
Author :
Scardelletti, Maximilian C. ; Ponchak, George E.
Author_Institution :
Glenn Res. Center, NASA, Cleveland, OH, USA
Abstract :
Oscillators that operate at 720 and 940 MHz and characterized over a temperature range of 25°C to 200°C and 250°C, respectively, are presented. The oscillators are designed on alumina substrates with typical integrated circuit fabrication techniques. Cree SiC MESFETs, thin film metal-insulator-metal capacitors and spiral inductors, and Johanson miniature chip antennas make-up the circuits. The output power and phase noise are presented as a function of temperature and frequency.
Keywords :
Schottky gate field effect transistors; antennas; capacitors; inductors; oscillators; wireless sensor networks; Johanson miniature chip antennas; MESFET; alumina substrates; frequency 720 MHz; frequency 940 MHz; integrated circuit fabrication techniques; oscillators; spiral inductors; temperature 25 C to 200 C; temperature 25 C to 250 C; thin film metal- insulator-metal capacitors; wireless sensors; Antennas; Frequency measurement; Phase noise; Temperature measurement; Temperature sensors; MESFETS; chip antennas; oscillators SiC alumina;
Conference_Titel :
Wireless Sensors and Sensor Networks (WiSNet), 2011 IEEE Topical Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4244-8414-0
Electronic_ISBN :
978-1-4244-8413-3
DOI :
10.1109/WISNET.2011.5725026
