1-3형 압전 복합체를 이용한 광대역 수중 통신용 음향 트랜스듀서에 관한 연구
A Study of a Wideband Acoustic Transducer for Underwater Communication Using 1-3 Type Piezoelectric Transducer
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초록
Recently, many researches in relation to data transmission with faster speed and greater volume, many researches have been carried out on sonar systems for underwater communication. According to these researches, an acoustic transducer for underwater communication requires wide bandwidth properties. In domestic researches for underwater communication sonar, an operating frequency in the range of 20~40 kHz is used. In this paper, we propose anon-resonance type acoustic transducer for underwater communication. The TVR (transmitting voltage response) characteristics increased linearly as the frequency increased, and the RVS (receiving voltage sensitivity) characteristics were constant as the frequency increased. Traditional techniques for wide bandwidth transducershave a limit and a transmission loss difference at lower and higher frequency operating ranges. In this paper, the new transducer proposed decreased the transmission loss under some conditions. It was optimized with the FE analysis tool (ATILA) and evaluated using the TVR and the RVS characteristics in the range of 10~90 kHz. The value of TVR was 138 dB at 20 kHz and 148 dB at 40 kHz, and the differences was 12 dB. The value of RVS was 195±2 dB and nearly constant. From theseresults, it is certain that the developed transducers can be used for an underwater communication network in the 1.3 km range with both a 20 kHz bandwidth and 30 kHz center frequency.
Abstract
Recently, many researches in relation to data transmission with faster speed and greater volume, many researches have been carried out on sonar systems for underwater communication. According to these researches, an acoustic transducer for underwater communication requires wide bandwidth properties. In domestic researches for underwater communication sonar, an operating frequency in the range of 20~40 kHz is used. In this paper, we propose anon-resonance type acoustic transducer for underwater communication. The TVR (transmitting voltage response) characteristics increased linearly as the frequency increased, and the RVS (receiving voltage sensitivity) characteristics were constant as the frequency increased. Traditional techniques for wide bandwidth transducershave a limit and a transmission loss difference at lower and higher frequency operating ranges. In this paper, the new transducer proposed decreased the transmission loss under some conditions. It was optimized with the FE analysis tool (ATILA) and evaluated using the TVR and the RVS characteristics in the range of 10~90 kHz. The value of TVR was 138 dB at 20 kHz and 148 dB at 40 kHz, and the differences was 12 dB. The value of RVS was 195±2 dB and nearly constant. From theseresults, it is certain that the developed transducers can be used for an underwater communication network in the 1.3 km range with both a 20 kHz bandwidth and 30 kHz center frequency.
참고문헌 (8)
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- 초음파를 이용한 수중 영상 정보전송기술 개발, "임용곤", 해양연구원, ~ (2003)
- Butler,S.C., "Triply Resonant Broadband Transducers", Oceans apos. 02 MTS, 2002, pp.4(29), 2334~2341
- Stansfield,D., "Underwater Electroacoustics Transducers" (2003), Peninsyla Publishing
- Lee,K.W., "Acoustic Impedance Matching Methode Using Triple Matching Plate for Wideband Ultrasonic Underwater Acoustic Characteristics", The 5th Seminar on Naval Weapon Systems Development, pp.376~382 (2004)
- Levinson,M.L., "Electronics Ceramics" (1987), MARCEL DEKKER INC
- Bowen,L., "Injecton Molded Fine,Scale Piezoelectric Composite Transducer", IEEE Ultrasonics Symposium, pp.499~503 (1993)
- Newnham,R.E., "Connectivity and Piezoelectric-pyroelectric Composite", Mat. Res. Bull, 13, pp.525~536 (1978)