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Wide-Angle Acoustic Beam Steering with Arrays of PiezoCrystal Tonpilz Transducers

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-15-P-1078
Agency Tracking Number: N142-111-0641
Amount: $79,959.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N142-111
Solicitation Number: 2014.2
Solicitation Year: 2014
Award Year: 2015
Award Start Date (Proposal Award Date): 2014-10-27
Award End Date (Contract End Date): 2015-08-27
Small Business Information
97 Elm Street
Cohasset, MA 02025
United States
DUNS: 000000000
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 John Butler
 President/Chief Scientist
 (781) 383-2002
Business Contact
 Nancy Butler
Title: Scientific Officer
Phone: (781) 383-2002
Research Institution

This SBIR Phase I Proposal addresses the need for a wide-angle beam steering array with piezoelectric single crystal Tonpilz transducers. The objective is to design, build and test a sub-array of piezoelectric single crystal Tonpilz SONAR transducers that can be steered over large angles with high directivity and low side lobe levels. These objectives will be accomplished through not only experimental but also theoretical means. Critical issues to be addressed include: element uniformity in large-scale production, array mounting structure that prevents element-to-element crosstalk, and minimizing the effect of coupling of elements through the medium itself. In this proposal we discuss these critical issues and will investigate possible means for minimizing adverse effects on array performance. In addition to analytical analysis and array interaction programs, finite element modeling will also be used in conjunction with the fabrication and evaluation of a sub-array of Tonpilz single crystal transducer elements.

* Information listed above is at the time of submission. *

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