Electrical generator or motor structure – Educational or construction units or kits
Patent
1974-07-02
1976-03-09
Budd, Mark O.
Electrical generator or motor structure
Educational or construction units or kits
310 89, 310 97, 310 98, 310 81, 333 30R, H01L 4104
Patent
active
039433897
ABSTRACT:
A surface acoustic wave (SAW) structure is disclosed wherein a SAW device is incorporated as an exterior lamina within a composite laminate in order to temperature stabilize the acoustic device. The composite laminate is synthesized to selectively mismatch the thermal expansion characteristics of the piezoelectric material, which is the body of the acoustic device, along the axis of acoustic propagation and simultaneously approximately match the thermal expansion properties along the orthogonal axis. Compressive force is thereby applied to the acoustic device to keep the substrate length constant and thus provide an approximately zero temperature coefficient over a preferred range of temperatures.
REFERENCES:
patent: 2497685 (1950-02-01), Gravley
patent: 3187207 (1965-06-01), Tomes
patent: 3349259 (1967-10-01), Kistler
patent: 3437849 (1969-04-01), Treatch et al.
patent: 3464033 (1969-08-01), Tournois
patent: 3543193 (1970-11-01), Fitch et al.
patent: 3673442 (1972-06-01), Sonderegger
patent: 3736532 (1973-05-01), Armenakas
patent: 3786373 (1974-01-01), Schulz et al.
Hickernell Fred S.
Moore Larry A.
Bingham Michael D.
Budd Mark O.
Motorola Inc.
Weiss Harry M.
LandOfFree
Temperature stabilization of surface acoustic wave substrates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature stabilization of surface acoustic wave substrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature stabilization of surface acoustic wave substrates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-835062