Properties of thin bilaminar disks of a piezoceramic material are discussed. The acousto-electrical transducer properties can be simply described in terms of the resonance frequency and the coupling constant of the ceramic disk. For example, the sensitivity when used in a microphone does not vary with the disk diameter, provided the resonance frequency remains the same. Thus, the making of thinner disks permits the construction of smaller microphones.

Authors: Roos, J.; Koorneef, J.
Affiliation: Philips Research Laboratories, N. V. Philips' Gloeilampenfabrieken, Eindhoven, The Netherlands
JAES Volume 17 Issue 2 pp. 174, 175; April 1969
Publication Date: April 1, 1969

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