Dipole transducer enhancement from a passive resonator

A passive resonator model for enhancing the low frequency performance of dipole transducers is presented using a spherical wave function model. It is shown that because the near field response of a dipole has the same on-axis low frequency dependence as an equivalent monopole, it can effectively exc...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2014-11, Vol.136 (5), p.2472-2477
Main Authors: Butler, John L, Butler, Alexander L, Curtis, Victoria
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A passive resonator model for enhancing the low frequency performance of dipole transducers is presented using a spherical wave function model. It is shown that because the near field response of a dipole has the same on-axis low frequency dependence as an equivalent monopole, it can effectively excite a nearby monopole passive resonator and do this with enough strength to significantly modify the response of the system. Sample results are presented to demonstrate the performance enhancement and to illustrate the conversion of the dipole beam pattern to a nearly omni-directional beam pattern.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4898049