Conference proceeding
Performance evaluation of wideband ultrasound hydrophone probes beyond 20 MHz
Proceedings of the IEEE 28th Annual Northeast Bioengineering Conference, v 2002, pp 249-250
2002
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Abstract
A powerful measurement technique suitable for virtually continuous calibration of ultrasonic hydrophone probes in the frequency range 250 kHz 60 MHz is described and frequency responses of PVDF polymer hydrophones are presented. The validity of the calibration results was examined using independent calibration techniques. The values of sensitivity in V/Pa obtained using a linear swept frequency technique were compared with those which were determined from the measurements employing nonlinear wave propagation. Also, the sensitivity against frequency data obtained here were compared with the data provided by an independent national laboratory. The overall agreement between the calibration results obtained using different techniques mentioned above was within 1 dB at the frequencies up to 25 MHz. The uncertainty increased gradually with increasing frequency and was determined to be 2.5 dB at 60 MHz. A spatial averaging correction model is being developed to minimize this uncertainty. The near continuous frequency plots in the 40-60 MHz bandwidth were not reported so far and reveal that the ultrasonic hydrophone probes response is largely controlled by their design architecture.
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Details
- Title
- Performance evaluation of wideband ultrasound hydrophone probes beyond 20 MHz
- Creators
- E.G Radulescu - Drexel UniversityP.A Lewin - Drexel UniversityA Nowicki - Institute of Fundamental Technological ResearchP.A Shankar - Drexel University
- Publication Details
- Proceedings of the IEEE 28th Annual Northeast Bioengineering Conference, v 2002, pp 249-250
- Conference
- IEEE 28th Annual Northeast Bioengineering Conference, 28th (Drexel University, Philadelphia, Pennsylvania, United States, 21 Apr 2002–21 Apr 2002)
- Series
- Annual Northeast Bioengineering Conference
- Publisher
- IEEE
- Number of pages
- 2
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000175970000125
- Scopus ID
- 2-s2.0-0036072479
- Other Identifier
- 991019167729804721
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- Web of Science research areas
- Engineering, Biomedical