Doubly rotated cylindrical crystal resonator

Details Doubly rotated cylindrical crystal resonator Doubly rotated cylindrical crystal resonator

1985-02-11

1986-02-04

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310368, 310369, H01L 4108

Patent

active

045688508

ABSTRACT:
Improvement of resonator circuit parameters, unwanted mode suppression, and the frequency-temperature characteristic of a crystal resonator is provided by a doubly cut crystal resonator plane having at least one major face including a cylindrical contour, the axis of which is parallel to the direction of the projection of the eigenvector (the normal coordinate) for the desired operating mode. The cylinder axis is at an angle to the doubly rotated electrical axis such that the fast shear "b" mode is suppressed while the slow shear "c" mode is unaffected. The radius of the cylinder is selectively chosen for altering the frequency-temperature characteristic.

REFERENCES:
patent: 4167686 (1979-09-01), Fukuyo
patent: 4375604 (1983-03-01), Vig
patent: 4476411 (1984-10-01), Okazaki et al.
patent: 4486682 (1984-12-01), Nakazawa et al.
patent: 4499395 (1985-02-01), Kahan
patent: 4542355 (1985-09-01), Ballato
Chapter 5, "Doubly Rotated Thickness Mode Plate Vibrators", Arthur Ballato, hysical Acoustics, vol. 13, Academic Press, New York, 1977 (W. P. Mason & R. N. Thurston, eds.) pp. 115-181, p. 143 discloses that the doubly rotated cut of quartz has particular motion out of the plane of the plate . . . .

Affiliated with

Also associated with

Rating

Doubly rotated cylindrical crystal resonator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Doubly rotated cylindrical crystal resonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doubly rotated cylindrical crystal resonator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2342855