Accession Number : ADD000864

Title :   Piezoelectric Crystal Element.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Ballato,Arthur D ; Bechmann,Rudolf

Report Date : 24 Aug 1965

Pagination or Media Count : 3

Abstract : An object of this invention is to provide a single piezoelectric crystal element having a plurality of useful modes of motion that may be used simultaneously for high frequency operation. Another object of this invention is to provide a piezoelectric crystal element having a plurality of independently controlled frequencies whose properties can be calculated in advance, and which can be used for equally exciting the two thickness shear modes of a piezoelectric quartz element. Another object of this invention is to reduce the number and cost of crystals used in electric wave filter systems and other wave transmission networks.

Descriptors :   *Piezoelectric crystals, *Patents, *Quartz, Electric filters, Wave propagation

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE