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 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.
Image Acoustics, Incorporated, Cohasset, Massachusetts 02025.
John L
JL
Butler
Image Acoustics, Incorporated, Cohasset, Massachusetts 02025.
Alexander L
AL
Butler
Image Acoustics, Incorporated, Cohasset, Massachusetts 02025.
Victoria
V
Curtis