JPS5750198A - Transceiver for underwater use - Google Patents

Transceiver for underwater use

Info

Publication number
JPS5750198A
JPS5750198A JP12487380A JP12487380A JPS5750198A JP S5750198 A JPS5750198 A JP S5750198A JP 12487380 A JP12487380 A JP 12487380A JP 12487380 A JP12487380 A JP 12487380A JP S5750198 A JPS5750198 A JP S5750198A
Authority
JP
Japan
Prior art keywords
piezoelectric
piezoelectric body
reflection
high polymer
acoustic impedance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12487380A
Other languages
Japanese (ja)
Inventor
Haimi Takasaki
Yukio Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12487380A priority Critical patent/JPS5750198A/en
Publication of JPS5750198A publication Critical patent/JPS5750198A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Abstract

PURPOSE:To reject the reflection of sound produced by unmatching of acoustic impedance density and to simplify the manufacture, transportation and assembling, by using a piezoelectiric body for an oscillator for underwater use transceivers. CONSTITUTION:A transceiver consists of a high polymer piezoelectric material and composite piezoelectric mateial of fine powder between high polymer material and piezoelectric porcelain material, and electrodes 2, 3 are provided inside and outside a rod shape piezoelectric body 1 polarized radially, and they are connected to terminals 2', 3' with leads, and the entire surface of the piezoelectric body 1 is covered with an acoustically transmitting insulating material 4 so that no air bobbles and air layer can be left. Thus, since the acoustic impedance density of the piezoelectric body is very similar that of water, the incoming sound is given in the piezoelectric body without almost reflection.
JP12487380A 1980-09-09 1980-09-09 Transceiver for underwater use Pending JPS5750198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12487380A JPS5750198A (en) 1980-09-09 1980-09-09 Transceiver for underwater use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12487380A JPS5750198A (en) 1980-09-09 1980-09-09 Transceiver for underwater use

Publications (1)

Publication Number Publication Date
JPS5750198A true JPS5750198A (en) 1982-03-24

Family

ID=14896204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12487380A Pending JPS5750198A (en) 1980-09-09 1980-09-09 Transceiver for underwater use

Country Status (1)

Country Link
JP (1) JPS5750198A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0279695U (en) * 1988-12-06 1990-06-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0279695U (en) * 1988-12-06 1990-06-19

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