The design of protection circuitry for high-frequency ultrasound imaging systems

Transmission line lengths in the protection circuitry of a high-frequency (>20-MHz) ultrasound imaging system have an important effect on the frequency, amplitude, and bandwidth of the pulse-echo response of the system. A model that includes the transmission line lengths between the pulser, trans...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 1991-01, Vol.38 (1), p.48-55
Main Authors: Lockwood, G.R., Hunt, J.W., Foster, F.S.
Format: Article
Language:English
Subjects:
Acoustic wave devices, piezoelectric and piezoresistive devices
Applied sciences
Diodes
Electronics
Exact sciences and technology
Frequency
Impedance
Protection
Pulse amplifiers
Pulse circuits
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Switches
Transmission line theory
Ultrasonic imaging
Ultrasonic transducers
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Summary:Transmission line lengths in the protection circuitry of a high-frequency (>20-MHz) ultrasound imaging system have an important effect on the frequency, amplitude, and bandwidth of the pulse-echo response of the system. A model that includes the transmission line lengths between the pulser, transducer, and receiver and the electromechanical properties of high-frequency transducers is used to illustrate the importance of correctly choosing these line lengths. An iterative optimization procedure for designing the protection circuitry for a broadband system is proposed. A theoretical and experimental analysis of the validity of this approach is reported for a 45-MHz PVDF transducer.< >
ISSN:0885-3010
1525-8955
DOI:10.1109/58.67834