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Characterisation of high frequency focused ultrasonic transducers using modulation transfer function: concept and experimental approach

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3 Author(s)
Shiloh, K. ; Soreq NCR, Yaune, Israel ; Som, A.K. ; Bond, L.J.

The concept of the modulation transfer function, which is used to evaluate high quality optical systems, components and materials, has been adapted for the first time in a systematic way in ultrasonics to characterise high frequency focused transducers. The additional complexity of ultrasonics compared with optics has been analysed and treated. A 2-D MTF characteriser is presented, as a counterpart to the 1-D function in optics. An example of a complete experimental procedure providing the full performance of focused transducer is presented.

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Science, Measurement and Technology, IEE Proceedings A  (Volume:138 ,  Issue: 4 )