Scheduled System Maintenance on May 29th, 2015:
IEEE Xplore will be upgraded between 11:00 AM and 10:00 PM EDT. During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Effect of frequency tolerance and temperature response on the performance of surface acoustic wave sensor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
El-Shennawy, K. ; Arab Acad. for Sci. & Technol., Alexandria, Egypt

The main requirements of a frequency output surface acoustic wave (SAW) sensor are: high measurement resolution and compatibility with digital processors. This paper presents the technical analysis of a sensitive SAW sensor for the measurement of pressure and temperature. The sensor is created by a long SAW delay path on the surface of a thin diaphragm which contacts the media to be measured. The delay path and associated electroacoustic transducers are utilized as the feedback circuit in a miniature electronic oscillator having a frequency of 515 MHz. Since the time delay varies almost linearly with diaphragm temperature and pressure induced strain, the oscillator frequency is also a predominantly linear function of pressure and temperature. The effect of the frequency tolerance and the temperature response, is the mounting stress arising from baseplate bending during the welding process. This effect can severely distort the parabolic shape of the temperature curve which may be accomplished by a much larger frequency shift. Therefore the application of a mounting technique that avoids the creation of surface stresses in the substrate during welding is essential

Published in:

Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE  (Volume:1 )

Date of Conference:

1996