Remotely testable temperature sensor

Details Remotely testable temperature sensor Remotely testable temperature sensor

2004-12-10

2009-06-23

Allen, Andre J (Department: 2855)

Thermal measuring and testing

Temperature measurement

By a vibratory effect

C310S31300R

Reexamination Certificate

active

07549791

ABSTRACT:
The invention relates to a remotely interrogable SAW (surface acoustic wave) temperature sensor comprising. At least two resonators (T1,saw, T2,saw) have transducers having interdigitated electrodes connected to control buses of design such that they have different characteristic operating frequencies. A first resonator has a first surface acoustic wave propagation direction, parallel to one of the axes of the substrate, and a second resonator has a surface acoustic wave propagation direction making a nonzero angle (β) with the propagation direction of the first resonator. The control buses of the second transducer are inclined at a nonzero angle (γ) to the normal to the interdigitated electrodes of the second transducer so as to compensate for the power flow divergence of the acoustic waves along the second transducer.

REFERENCES:
patent: 5020034 (1991-05-01), Solal et al.
patent: 5432392 (1995-07-01), Kadota et al.
patent: 5475348 (1995-12-01), Hode et al.
patent: 5703427 (1997-12-01), Solal et al.
patent: 5936487 (1999-08-01), Solal et al.
patent: 5953433 (1999-09-01), Fujimoto et al.
patent: 6011344 (2000-01-01), Dufilie et al.
patent: 6043726 (2000-03-01), Solal et al.
patent: 6150900 (2000-11-01), Kadota et al.
patent: 6316861 (2001-11-01), Ballandras et al.
patent: 6317014 (2001-11-01), Kadota
patent: 6344705 (2002-02-01), Solal et al.
patent: 7126251 (2006-10-01), Solal et al.
patent: 2002/0079989 (2002-06-01), Kadota et al.
patent: 1 324 489 (2003-07-01), None
Buff W et al : “Universal Pressure and Temperature Saw Sensor for Wireless applications” Proceeding of the 1997, IEEE Ultrasonic Symposium, Ontario, Canada Oct. 5-8, 1997 IEEE Ultrasonic Symposium. Ontario Canada Oct. 5-8, 1997 IEEE Ultrasonic Symposium Proceedings New York, NY: IEEE, US Oct. 5, 1997.
W. Buff et al; Universal Pressure and Temperture Saw Sensor for Wireless Applications; 1997 IEEE Ultrasonics Symposium; pp. 359-362.
U.S. Appl. No. 523 054, filed Aug. 15, 1983 (Abandoned).
U.S. Appl. No. 647 883, filed Sep. 6, 1984 (Abandoned).
U.S. Appl. No. 08/338,448, filed Mar. 4, 1994, Solal (Abandoned).
Ventura, P. et al. “A New Accurate Analysis of Periodic IDTs Built on Unconventional Orientation on Quartz”, 1997, IEEE Ultrasonics Symp., pp. 139-142.

Affiliated with

Also associated with

Rating

Remotely testable temperature sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Remotely testable temperature sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remotely testable temperature sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4149180