Piezo-electric resonator or filter having slots formed which imp

Details Piezo-electric resonator or filter having slots formed which imp Piezo-electric resonator or filter having slots formed which imp

1983-06-20

1986-04-15

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310367, 310368, H03H 917

Patent

active

045830630

ABSTRACT:
A resonator or filter which comprises a bar (1) of piezoelectric material provided with electrodes (2,3) which are spaced from the two ends of the bar. In operation, thickness shear vibrations occur between the electrodes and the bar width to thickness ratio is such that said vibrations in turn produce Nth harmonic flexure vibrations which propagate across the bar width, N being an even number. In order to accelerate the rate of decay of the vibrations towards the (supported and hence energy-absorbant) ends of the bar, and thus to reduce the distance between the electrodes and the ends of the bar for a given quality factor, (N/2-1) slots (4), some of which may be omitted, are provided in each of these ends so that each end is divided into N/2 prongs (5) of equal width.

REFERENCES:
patent: 3143672 (1964-08-01), Mason
patent: 3646413 (1970-09-01), Oomen
patent: 4076987 (1978-02-01), Zumsteg

Affiliated with

Also associated with

Rating

Piezo-electric resonator or filter having slots formed which imp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezo-electric resonator or filter having slots formed which imp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezo-electric resonator or filter having slots formed which imp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1441699