Title :
Highly sensitive electrostatic voltage sensor on SAW double-waveguides
Author :
Medved, A.V. ; Mishkinis, R.A. ; Rutkovsky, P.F.
Author_Institution :
Inst. of Radioeng. & Electron., Acad. of Sci., Moscow, USSR
fDate :
7/5/1990 12:00:00 AM
Abstract :
An electrostatic voltage sensor using two SAW oscillators based on SAW Delta v/v waveguides was constructed. The frequency difference between these two oscillators is proportional to the electrostatic voltage applied between the waveguides and special planar electrodes. The steepness of voltage-frequency characteristic as high as 1.32 kHz/V was obtained that provided a very high sensitivity, several orders of magnitude higher than in all SAW voltage sensors reported previously.
Keywords :
surface acoustic wave devices; voltage measurement; voltage-frequency convertors; SAW double-waveguides; SAW voltage sensors; electrostatic voltage sensor; frequency difference; high sensitivity; planar electrodes; two SAW oscillators; voltage-frequency characteristic;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900633
