Title :
Radio frequency response of GaN-based SAW oscillator to UV illumination by the Sun and man-made source
Author :
Ciplys, D. ; Rimeika, R. ; Shur, M.S. ; Gaska, R. ; Sereika, A. ; Yang, J. ; Khan, M. Asif
Author_Institution :
Dept. of Electr. Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA
fDate :
1/31/2002 12:00:00 AM
Abstract :
A new solar-blind UV detector based on a GaN surface acoustic wave delay line oscillator is reported. The illumination by an artificial UV source in the presence of sunlight increased the RF spectral line width of the oscillator by almost an order of magnitude, which is attributed to the different noise spectra of these light sources. The output of this detector is a radio signal, which makes it especially attractive for remote sensing applications
Keywords :
gallium compounds; remote sensing; surface acoustic wave delay lines; surface acoustic wave oscillators; surface acoustic wave sensors; ultraviolet detectors; wide band gap semiconductors; GaN; RF spectral line width; SAW oscillator; Sun; UV illumination; delay line oscillator; man-made source; noise spectra; radio frequency response; remote sensing applications; solar-blind UV detector;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020053
