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Phase noise measurements of flexural plate wave ultrasonic sensors

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4 Author(s)
Baer, R.L. ; Hewlett-Packard Labs., Palo Alto, CA, USA ; Costello, B.J. ; Wenzel, S.W. ; White, R.M.

The phase noise spectrum of a flexural plate wave (FPW) ultrasonic sensor has been directly measured. The typical phase noise of an FPW sensor was observed to vary as 1/f at frequencies below 60 Hz, with a 1-Hz intercept of between -90 dB and -107 dB (rad2/Hz). This level of noise is consistent with the frequency jitter that is observed when the FPW sensor is configured in an oscillator

Published in:

Ultrasonics Symposium, 1991. Proceedings., IEEE 1991

Date of Conference:

8-11 Dec 1991