Accession Number : ADD011374

Title :   Microwave Resonator Using Lateral Excitation.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Ballato,A

Report Date : 24 Oct 1984

Pagination or Media Count : 16

Abstract : An improvement in piezoelectric crystal resonators using lateral excitation whereby energy of vibration trapped in a region between the electrodes is provided by the inclusion of recessed electrodes adjacent a relatively raised piezoelectric region on at least one major face of surface of the crystal. The recessed electrodes oppose one another in either a horizontal or a vertical direction to generate a lateral field in the body of the crystal upon excitation. Additionally, curved edge interfaces are provided between the recessed electrodes and the piezoelectric crystal material to reduce field gradients. Tapered electrodes which have the effect of increasing the energy trapping in the gap between the electrodes are also disclosed. (Author)

Descriptors :   *Patent applications, *Resonators, *Piezoelectric crystals, *Electrodes, Taper, Vertical orientation, Piezoelectric materials, Field theory, Curved profiles, Edges, Vibration, Interfaces, Energy, Gradients

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE