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Free Field Reciprocity Calibration in a Convergent Spherical Acoustic Wave of a Focusing Transducer |
| SHOU Wen-De;YAN Jia-Yong;WANG Hong-Zhang;QIAN De-Chu |
| Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030 |
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| Cite this article: |
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SHOU Wen-De, YAN Jia-Yong, WANG Hong-Zhang et al 2002 Chin. Phys. Lett. 19 1131-1134 |
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Abstract Basis on the reciprocity theorem of acoustic field, we derive the formula of reciprocity coefficient of a convergent spherical acoustic wave and calculate a series of the diffraction corrective factor curve of reciprocity coefficient of transducers. Using these formulas and corrective factors, we calibrate the free field transmitting current response and the free field voltage sensitivity of a focusing transducer by the self-reciprocity method. Experimental results of reciprocity calibration of the focusing transducer in the frequency range of 2 MHz to 5.4 MHz are presented.
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| Keywords:
43.58.+z
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Published: 01 August 2002
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| PACS: |
43.58.+z
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(Acoustical measurements and instrumentation)
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