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