Wideband acoustic transducer

Details Wideband acoustic transducer Wideband acoustic transducer

1997-10-06

2000-04-11

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310326, A61B 800, H01L 4108

Patent

active

060491590

ABSTRACT:
A transducer according to various aspects of the present invention provides high fractional bandwidth with relatively low degradation of the pulse duration and sensitivity. The transducer includes a back matching layer behind the transducer material. The back matching layer is characterized by an impedance selected to transmit a selected portion of the backwards propagating acoustic energy to an absorption layer. The remaining acoustic energy is reflected in the desired direction of propagation. As a result, the transducer provides enhanced bandwidth without excessive loss of sensitivity or increase in pulse duration.

REFERENCES:
patent: 2427348 (1947-09-01), Bond et al.
patent: 4166967 (1979-09-01), Benes et al.
patent: 4211948 (1980-07-01), Smith et al.
patent: 4211949 (1980-07-01), Brisken et al.
patent: 4507582 (1985-03-01), Glenn
patent: 4672591 (1987-06-01), Breimesser et al.
patent: 4680499 (1987-07-01), Umemura et al.
patent: 4771205 (1988-09-01), Mequio
patent: 5030874 (1991-07-01), Saito et al.
patent: 5070879 (1991-12-01), Herres
patent: 5163436 (1992-11-01), Saitoh et al.
patent: 5212671 (1993-05-01), Fujii et al.
patent: 5305756 (1994-04-01), Entrekin et al.
patent: 5327895 (1994-07-01), Hashimoto et al.
patent: 5392259 (1995-02-01), Bolorforosh
patent: 5396143 (1995-03-01), Seyed-Bolorforosh et al.
patent: 5423220 (1995-06-01), Finsterwald et al.
patent: 5438998 (1995-08-01), Hanafy
patent: 5503152 (1996-04-01), Oakley et al.
patent: 5526815 (1996-06-01), Granz et al.
patent: 5558092 (1996-09-01), Unger et al.
patent: 5644085 (1997-07-01), Lorraine et al.
patent: 5706252 (1998-01-01), Le Verrier et al.
patent: 5706564 (1998-01-01), Rhyne
patent: 5779644 (1998-07-01), Eberle et al.
patent: 5792058 (1998-08-01), Lee
patent: 5810009 (1998-09-01), Mine et al.

Affiliated with

Also associated with

Rating

Wideband acoustic transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wideband acoustic transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wideband acoustic transducer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1179071