New design for air transducers

B. T. Khuri-Yakub, J. H. Kim, C. H. Chou, P. Parent, G. S. Kino

Research output: Contribution to journalConference articlepeer-review

21 Citations (Scopus)


Air transducers in the 0.5-10-MHz frequency range are made with either one or two matching layers for broadband and efficient coupling of ultrasound into air. The authors present a design for the optimum value of the impedance of a second matching layer for maximum bandwidth and insertion loss. Theoretical designs predict a functional bandwidth of 30% and a two-way insertion loss of 35 dBs for a device operating at 1 MHz. Experimental results are in excellent agreement with theory. Silica aerogel samples are characterized, and designs that demonstrate their potential as matching layers for air transducer applications are shown. Also, results of transmission imaging through carbon-epoxy and Kevlar-epoxy samples are shown.

Original languageEnglish
Pages (from-to)503-506
Number of pages4
JournalUltrasonics Symposium Proceedings
Publication statusPublished - 1988 Oct
EventIEEE 1988 Ultrasonics Symposium - Proceedings - Chicago, IL, USA
Duration: 1988 Oct 21988 Oct 5

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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