Performance of a high dielectric constant piezoelectric ceramic for ultrasound transducers

T. Ritter, K. K. Shung, W. S. Hackenberger, Haifeng Wang, Thomas R. Shrout

Research output: Contribution to journalConference article

5 Scopus citations

Abstract

A high dielectric material suitable for medical imaging arrays has been investigated. Resonance techniques were used to characterize the complete set of electromechanical properties. Compared to Navy Type VI material a two-fold increase in clamped permittivity was observed while the coupling coefficient for linear array elements was almost identical (k33′ of 0.68 vs 0.69 for Navy Type VI). Measurements indicated high coupling and permittivity at frequencies up to at least 60 MHz. Models for 1-3 composites incorporating this material revealed an effective thickness coupling of 0.68 at a 55% volume fraction of ceramic. Simulated device performance indicated a 4dB sensitivity increase for array elements incorporating this material when compared to conventional materials.

Original languageEnglish (US)
Pages (from-to)1295-1298
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1999
Event1999 IEEE Ultrasonics Symposium - Caesars Tahoe, NV, USA
Duration: Oct 17 1999Oct 20 1999

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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    Ritter, T., Shung, K. K., Hackenberger, W. S., Wang, H., & Shrout, T. R. (1999). Performance of a high dielectric constant piezoelectric ceramic for ultrasound transducers. Proceedings of the IEEE Ultrasonics Symposium, 2, 1295-1298.