Surface acoustic wave sensing system and method for...

Details Surface acoustic wave sensing system and method for... Surface acoustic wave sensing system and method for...

2006-09-05

2006-09-05

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Vibration type

Reexamination Certificate

active

07100451

ABSTRACT:
A surface acoustic wave (SAW) sensor and an interrogator that transmits a noise source to the sensor for receiving an interrogation signal that is processed and compared to the source signal provides pressure and temperature measurements. One SAW sensor a single interdigital transducer serving as both an input and an output transducer for generating and detecting a SAW, and coded reflectors in a mirrored arrangement opposing the single interdigital transducer. The piezoelectric substrate is supported in a hermetically sealed package such that pressure on the package causes distortion of the substrate transducer surface and thus SAW velocity changes that reflect changes in pressure. Characteristic temperature coefficients of delay for the substrate are directly translated into a temperature value.

REFERENCES:
patent: 3978731 (1976-09-01), Reeder et al.
patent: 4382386 (1983-05-01), Coussot et al.
patent: 4994798 (1991-02-01), McColl
patent: 6003378 (1999-12-01), Scherr et al.
patent: 6137708 (2000-10-01), Lin et al.
patent: 6571638 (2003-06-01), Hines et al.

Affiliated with

Also associated with

Rating

Surface acoustic wave sensing system and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface acoustic wave sensing system and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface acoustic wave sensing system and method for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3620532