| 摘要 |
Disclosed is a wide-range ultrasonic transducer of sandwich construction, comprising piezo-ceramic laminae (2), fitted with electrodes, and plates/films (3, 13) in the shape of a parallelepiped with a width (B) to length (L) ratio of 0,42 and in which the relative thicknesses of the piezo-ceramic laminae and the plates/films are chosen such that one side surface of the parallelepiped undergoes co-phasal oscillations. |
