Wide-Angle Acoustic Beam Steering with Arrays of PiezoCrystal Tonpilz Transducers
Award last edited on: 11/15/2018

Sponsored Program
Awarding Agency
DOD : Navy
Total Award Amount
Award Phase
Solicitation Topic Code
Principal Investigator
John L Butler

Company Information

Image Acoustics Inc

40 Willard Street Suite 201
Quincy, MA 02169
   (781) 383-2002
Location: Single
Congr. District: 08
County: Norfolk

Phase I

Contract Number: N00014-15-P-1078
Start Date: 10/27/2014    Completed: 8/27/2015
Phase I year
Phase I Amount
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.

Single crystal arrays with lower side lobe levels, even at high steering angles. Improved sea-floor navigation and discovery as well as medical ultrasonic scanning.

,, high array directivity, transducer array crosstalk, Tonpilz transducer, low array sidelobe levels, wide-angle beam steering, Sonar Array, single crystal piezoelectrics, PIN-PMN-PT

Phase II

Contract Number: ----------
Start Date: 00/00/00    Completed: 00/00/00
Phase II year
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