대역통과 정합회로를 이용한 수중음향변환기의 대역폭 확장
Bandwidth Enhancement of Underwater Acoustic Transducer Using a Bandpass Matching Network
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The range resolution of echo sounders can be improved by enhancing the transducer bandwidth. We designed a bandpass matching network for expanding the bandwidth of a transducer by scaling in both impedance and frequency after transforming a lowpass network into a bandpass configuration for a third-order Bessel filter. We measured the effect of the Bessel matching network for a 50 kHz sandwich type transducer on the transmitting voltage response (TVR), receiving sensitivity (SRT) and figure of merit (FOM), using a chirp echo sounder system. Both the simulation and experimental results indicated that the transducer with a bandpass matching network was capable of producing a symmetrical acoustic output over a wider bandwidth (8.25 kHz) than was the transducer without a matching network (3.75 kHz). By implementing the Bessel matching network, we achieved a 120% bandwidth enhancement.
Abstract
The range resolution of echo sounders can be improved by enhancing the transducer bandwidth. We designed a bandpass matching network for expanding the bandwidth of a transducer by scaling in both impedance and frequency after transforming a lowpass network into a bandpass configuration for a third-order Bessel filter. We measured the effect of the Bessel matching network for a 50 kHz sandwich type transducer on the transmitting voltage response (TVR), receiving sensitivity (SRT) and figure of merit (FOM), using a chirp echo sounder system. Both the simulation and experimental results indicated that the transducer with a bandpass matching network was capable of producing a symmetrical acoustic output over a wider bandwidth (8.25 kHz) than was the transducer without a matching network (3.75 kHz). By implementing the Bessel matching network, we achieved a 120% bandwidth enhancement.
참고문헌 (17)
- Airmar Technology Corporation, "Airmar product catalog", 14~15 (1994)
- Bowick C, "RF circuit design", pp.59~64 (1982), Elsevier Inc
- Coates R, "The design of transducers and arrays for underwater data transmission", IEEE J Ocean Eng, 16, pp.123~135 (1991)
- Coates R, "Multiple-mode acoustic transducer calculations", IEEE Trans Ultrason Ferroelect Freq Contr, 36, pp.471~473 (1989)
- Coates R, "Design of matching networks for acoustic transducers", Ultrasonics, 26, pp.59~64 (1988)
- Dong Y, "Analysis of a new joint time-frequency distribution of suppressing cross-term", Res J Appl Sci Eng Technol, 4, pp.1580~1584 (2012)
- Microwave Applications, "Microstrip Filters for RF", pp.2001, Hong JS
- 이대재, "12 주파수의 48 tonpilz 진동소자를 이용한 광대역 초음파 모자이크 변환기의 대역폭 확장", 한국수산과학회지, 47(3), pp.302~312 (2014), 한국수산과학회
- 이대재, "고등어( Scomber japonicus ), 불볼락( Sebastes thompsoni ) 및 쥐노래미( Hexagrammos otakii )에 의한 광대역 음향산란신호의 시간-주파수 분석", 한국수산과학회지, 48(2), pp.221~232 (2015), 한국수산과학회
- 이대재, "다중 공진 광대역 음향변환기의 대역폭 개선", 한국수산과학회지, 50(5), pp.605~615 (2017), 한국수산과학회[DOI]
- 이대재, "40-75 kHz의 주파수 범위에서 동작하는 광대역 초음파 변환기의 설계 및 개발", 한국수산과학회지, 47(3), pp.292~301 (2014), 한국수산과학회
- 이대재, "활어 개체어의 광대역 음향산란신호로부터 어종식별을 위한 시간-주파수 특징 추출", 한국수산과학회지, 49(2), pp.214~223 (2016), 한국수산과학회
- Murata MFG, "Ceramic ultrasonic transducer catalog (P311", 78), 1978, pp.1~4
- Radmanovic M, "Design and modeling of the power ultrasonic transducers", pp.131~135 (2004), MP Interconsulting
- Stansfield D, "Underwater electroacoustic transducers", pp.119~141 (1991), Bath University Press
- Tokin, "Piezoelectric ceramics Catalog (VR-07JE)", 1~35 (1999)
- Winder S, "Analog and digital filter design", pp.49~52 (2002), Elsevier Inc