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An air-coupled line-focused capacitive ultrasonic transducer
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UNSPECIFIED (2000) An air-coupled line-focused capacitive ultrasonic transducer. In: IEEE Ultrasonics Symposium, OCT 22-25, 2000, SAN JUAN, PR.
Full text not available from this repository.Abstract
A new type of air-coupled, line-focusing transducer is described. This capacitive broadband device, with an active area measuring 19.5mm x 45mm, consists of a metallised 3.5mm thick polymer film mounted over a brass backplate cylindrically concave along its length, with a radius of 28mm. Device bandwidth (-6dB) was found to be typically 200kHz to 900kHz, with a focal line width of similar to0.68 mm. A miniature air-coupled receiver was used to scan the radiated field of these devices, excited in both tone-burst and broadband mode, and the results compared to theoretical sound pressure plots using an impulse response method. A pair of devices has been used in a novel crossed arrangement to image the surface profile of solids.
| Item Type: | Conference Item (UNSPECIFIED) |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology R Medicine |
| Series Name: | ULTRASONICS SYMPOSIUM |
| Journal or Publication Title: | 2000 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 |
| Publisher: | IEEE |
| ISBN: | 0-7803-6365-5 |
| ISSN: | 1051-0117 |
| Editor: | Schneider, SC and Levy, M and McAvoy, BR |
| Date: | 2000 |
| Number of Pages: | 4 |
| Page Range: | pp. 1061-1064 |
| Publication Status: | Published |
| Title of Event: | IEEE Ultrasonics Symposium |
| Location of Event: | SAN JUAN, PR |
| Date(s) of Event: | OCT 22-25, 2000 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/11453 |
Data sourced from Thomson Reuters' Web of Knowledge
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