Transducer frequency response and impact on TPOAT signal
D Pachauri, TA Stiles, N Purwar… - … Imaging and Sensing …, 2008 - spiedigitallibrary.org
D Pachauri, TA Stiles, N Purwar, P Dey, SK Patch
Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth …, 2008•spiedigitallibrary.orgIdeal transducers have perfectly uniform response to incoming pressure waves, regardless
of frequency. In practice, piezoelectric transducers are designed with a particular center
frequency (CF) and are most sensitive to signals with strong frequency content near CF,
bandpass filtering signal-and reconstructed images. We characterized the frequency
dependent receive sensitivity of three single-element transducers with CFs ranging from 1 to
3.5 MHz. The resulting sensitivity response curves are applied to ideal thermo/photo/opto …
of frequency. In practice, piezoelectric transducers are designed with a particular center
frequency (CF) and are most sensitive to signals with strong frequency content near CF,
bandpass filtering signal-and reconstructed images. We characterized the frequency
dependent receive sensitivity of three single-element transducers with CFs ranging from 1 to
3.5 MHz. The resulting sensitivity response curves are applied to ideal thermo/photo/opto …
Ideal transducers have perfectly uniform response to incoming pressure waves, regardless of frequency. In practice, piezoelectric transducers are designed with a particular center frequency (CF) and are most sensitive to signals with strong frequency content near CF, bandpass filtering signal - and reconstructed images. We characterized the frequency dependent receive sensitivity of three single-element transducers with CFs ranging from 1 to 3.5 MHz. The resulting sensitivity response curves are applied to ideal thermo/photo/opto-acoustic (TPOAT) signals generated by ideal spherical absorbers to show the impact of transducer frequency response on measured TPOAT data and reconstructed images.
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