Accession Number:

ADP002482

Title:

Acoustically Coupled Resonators: Filters and Pressure Transducers,

Descriptive Note:

Corporate Author:

CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS LANNION (FRANCE)

Personal Author(s):

• Detaint,J.
• Carru,H.
• Amstutz,P.
• Schwartzel,J.

Report Date:

1983-01-01

Pagination or Media Count:

9.0

Abstract:

Acoustical radiation is of particular intensity for resonators having large normal components of displacement. This can be used as a simple and efficient way to transfer energy between two resonators in order to constitute a filter structure. A one dimensional modelization of gas coupled extensional composite resonators is described. This model indicates a simple dependence of the response on several parameters of the gas gap. A theoretical investigation of vibrational and electrical behaviour of composite resonators and of acoustically coupled biresonator filters made by a bi or tridimensional finite element analysis is reported. This analysis was performed for two different types of structures one of cylindrical geometry, the other of paralellipipedic geometry.

Descriptors:

• *Acoustic resonators
• *Acoustic emissions
• Piezoelectric materials
• Filters
• Pressure transducers
• Couplings
• Energy transfer
• Finite element analysis

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE