Wide band acoustic receiver transducer

Details Wide band acoustic receiver transducer Wide band acoustic receiver transducer

1983-04-20

1986-04-01

Cangialosi, Salvatore

Communications, electrical: acoustic wave systems and devices

Signal transducers

Receivers

181104, 367 25, H04R 1700, G01V 140

Patent

active

045802521

ABSTRACT:
For use in an acoustic logging tool having a sonde adapted to be lowered in a borehole, an improved acoustic transducer comprising a pyramidal frustrum is disclosed. The preferred embodiment incorporates fifteen sides. Each side mounts a piezoelectric crystal for receiving. Mechanical resonant frequencies of the transducer are outside the receiver band width which is about 25 kHz. The resonant frequencies are above 25 kHz, thereby avoiding primary resonant frequencies within the band width.

REFERENCES:
patent: 3136381 (1964-06-01), Anderson
patent: 3409869 (1968-11-01), McCool et al.
patent: 3434563 (1969-03-01), Zemanek, Jr.

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