200-kHz Wide-Band Underwater Ultrasonic Transducers for Color Video Picture Transmission

Takeshi INOUE; Noriko WATARI; Akira KAMEYAMA; Michiya SUZUKI; Tetsuo MIYAMA

200-kHz Wide-Band Underwater Ultrasonic Transducers for Color Video Picture Transmission

Takeshi INOUE, Noriko WATARI, Akira KAMEYAMA, Michiya SUZUKI, Tetsuo MIYAMA

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Wide-band, low-ripple underwater transducers with high-power acoustic radiation capability have been designed on the basis of multiple-mode filter synthesis theory. They are composed of triple acoustic matching plates and double backing plates with optimized specific acoustic impedances,besides piezoelectric ceramic elements. One of the backing plates employs a Fe damping-alloy to suppress unwanted response peaks in the frequency range above the passband region. Two 33 array transducers were fabricated, each with a center frequency of 200 kHz, one as a transmitter and the other as a receiver. The two transducers show high-sensitivity, low-ripple and wide-band transmitting and receiving responses. Then, the transducers were applied in a color video picture digital transmission system.Clear color video pictures, composed of 256240 pixels, were successfully received within one second.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E77-A No.7 pp.1185-1193

Publication Date: 1994/07/25

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Type of Manuscript: PAPER

Category: Ultrasonics

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Takeshi INOUE, Noriko WATARI, Akira KAMEYAMA, Michiya SUZUKI, Tetsuo MIYAMA, "200-kHz Wide-Band Underwater Ultrasonic Transducers for Color Video Picture Transmission" in IEICE TRANSACTIONS on Fundamentals, vol. E77-A, no. 7, pp. 1185-1193, July 1994, doi: .
Abstract: Wide-band, low-ripple underwater transducers with high-power acoustic radiation capability have been designed on the basis of multiple-mode filter synthesis theory. They are composed of triple acoustic matching plates and double backing plates with optimized specific acoustic impedances,besides piezoelectric ceramic elements. One of the backing plates employs a Fe damping-alloy to suppress unwanted response peaks in the frequency range above the passband region. Two 33 array transducers were fabricated, each with a center frequency of 200 kHz, one as a transmitter and the other as a receiver. The two transducers show high-sensitivity, low-ripple and wide-band transmitting and receiving responses. Then, the transducers were applied in a color video picture digital transmission system.Clear color video pictures, composed of 256240 pixels, were successfully received within one second.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/e77-a_7_1185/_p

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@ARTICLE{e77-a_7_1185,
author={Takeshi INOUE, Noriko WATARI, Akira KAMEYAMA, Michiya SUZUKI, Tetsuo MIYAMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={200-kHz Wide-Band Underwater Ultrasonic Transducers for Color Video Picture Transmission},
year={1994},
volume={E77-A},
number={7},
pages={1185-1193},
abstract={Wide-band, low-ripple underwater transducers with high-power acoustic radiation capability have been designed on the basis of multiple-mode filter synthesis theory. They are composed of triple acoustic matching plates and double backing plates with optimized specific acoustic impedances,besides piezoelectric ceramic elements. One of the backing plates employs a Fe damping-alloy to suppress unwanted response peaks in the frequency range above the passband region. Two 33 array transducers were fabricated, each with a center frequency of 200 kHz, one as a transmitter and the other as a receiver. The two transducers show high-sensitivity, low-ripple and wide-band transmitting and receiving responses. Then, the transducers were applied in a color video picture digital transmission system.Clear color video pictures, composed of 256240 pixels, were successfully received within one second.},
keywords={},
doi={},
ISSN={},
month={July},}

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TY - JOUR
TI - 200-kHz Wide-Band Underwater Ultrasonic Transducers for Color Video Picture Transmission
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1185
EP - 1193
AU - Takeshi INOUE
AU - Noriko WATARI
AU - Akira KAMEYAMA
AU - Michiya SUZUKI
AU - Tetsuo MIYAMA
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E77-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 1994
AB - Wide-band, low-ripple underwater transducers with high-power acoustic radiation capability have been designed on the basis of multiple-mode filter synthesis theory. They are composed of triple acoustic matching plates and double backing plates with optimized specific acoustic impedances,besides piezoelectric ceramic elements. One of the backing plates employs a Fe damping-alloy to suppress unwanted response peaks in the frequency range above the passband region. Two 33 array transducers were fabricated, each with a center frequency of 200 kHz, one as a transmitter and the other as a receiver. The two transducers show high-sensitivity, low-ripple and wide-band transmitting and receiving responses. Then, the transducers were applied in a color video picture digital transmission system.Clear color video pictures, composed of 256240 pixels, were successfully received within one second.
ER -