40-75 kHz의 주파수 범위에서 동작하는 광대역 초음파 변환기의 설계 및 개발
Design and Development of a Broadband Ultrasonic Transducer Operat- ing over the Frequency Range of 40 to 75 kHz
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참고문헌
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초록
The objective of this study was to design and develop a broadband ultrasonic transducer that has both wide band- width and high sensitivity to measure broadband echoes related to identifying fish species. A broadband ultrasonic transducer providing a nearly flat transmitting response band of 40.2-75.5 kHz with a -12 dB bandwidth of 35.3 kHz was achieved by integrating 12 tonpilz transducer elements operating at different resonance frequencies. The average transmitting voltage response, receiving sensitivity, and figure of merit values in this frequency band were 168.4 dB (re 1 μPa/V at 1 m), -196.8 dB (re 1 V/μPa), and -28.4 dB, respectively. The results suggest that bandwidth and sen- sitivity can be widened and improved by adjusting the array pattern and the structure of tonpilz transducer elements.
Abstract
The objective of this study was to design and develop a broadband ultrasonic transducer that has both wide band- width and high sensitivity to measure broadband echoes related to identifying fish species. A broadband ultrasonic transducer providing a nearly flat transmitting response band of 40.2-75.5 kHz with a -12 dB bandwidth of 35.3 kHz was achieved by integrating 12 tonpilz transducer elements operating at different resonance frequencies. The average transmitting voltage response, receiving sensitivity, and figure of merit values in this frequency band were 168.4 dB (re 1 μPa/V at 1 m), -196.8 dB (re 1 V/μPa), and -28.4 dB, respectively. The results suggest that bandwidth and sen- sitivity can be widened and improved by adjusting the array pattern and the structure of tonpilz transducer elements.
참고문헌 (27)
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