Low drift relative phase sensor employing surface acoustic waves

Details Low drift relative phase sensor employing surface acoustic waves Low drift relative phase sensor employing surface acoustic waves

1982-12-27

1984-07-24

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

310313R, 333155, 324 82, H03H 9145, H03H 976, H03H 966

Patent

active

044620110

ABSTRACT:
Pairs of input transducers are formed on the surface of a piezoelectric crystalline body. The input transducers in each pair produce adjacent parallel surface acoustic waves of opposite polarity and specific phase difference which are sensed by a corresponding output transducer. The input transducers of each pair are offset from one another by amounts related to the wavelength of the surface acoustic wave so that a maximum cancellation of the voltages induced in the output transducers by the acoustic waves can be used to indicate the relative delay or phase difference of signals applied to the input terminals and to do so in a manner which is insensitive to temperature variation from one point to another in the piezoelectric crystal.

REFERENCES:
patent: 3548306 (1970-12-01), Whitehouse
patent: 3727718 (1973-04-01), Whitehouse
patent: 4078210 (1978-03-01), Lewis

Affiliated with

Also associated with

Rating

Low drift relative phase sensor employing surface acoustic waves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low drift relative phase sensor employing surface acoustic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low drift relative phase sensor employing surface acoustic waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-99249