TONPILZ PIEZOELECTRIC TRANSDUCERS WITH ACOUSTIC MATCHING PLATES FOR UNDERWATER COLOR IMAGE TRANSMISSION

被引：24
作者：
INOUE, T
NADA, T
TSUCHIYA, T
NAKANISHI, T
MIYAMA, T
KONNO, M
机构：
[1] NEC CORP LTD, DIV RADIO APPLICAT, FUCHU, TOKYO 183, JAPAN
[2] JAPAN MARINE SCI & TECHNOL CTR, YOKOSUKA 237, JAPAN
[3] SENSHU UNIV, DEPT SCI & ENGN, ISHINOMAKI, MIYAGI 986, JAPAN
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1993年 / 40卷 / 02期
关键词：
D O I：
10.1109/58.212560
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Tonpilz piezoelectric transducers with multiple acoustic matching plates are suitable for color image acoustic transmission, to achieve wideband low-ripple characteristics as well as high-efficiency high-power transmitting capability. The design method for the transducers was investigated on the basis of multiple-mode filter synthesis theory. For transducers with single, double and triple matching plates, optimum specific acoustic impedances and lengths were calculated. Moreover, based on this design method, a 24-kHz array comprising nine identical transducers with single matching plates was built and evaluated. As a result, this array showed high-efficiency, low-ripple and wide-band characteristics. Excellent agreement between theoretical values and experimental results was obtained. A field test was carried out on color image transmission from a 3500-m sea depth, using the fabricated array, during which good color images were received.
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页码：121 / 130
页数：10
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