BioSono provides a cyberspace (www.biosono.com) where researchers, engineers, and students can find useful reference and educational materials, conduct acoustic simulation, post questions on design and development, and get answers. The online KLM based transducer acoustic stack simulation, which is currently free, can help you choose piezoelectric, matching and backing material, and a tuning electrical network. The output from the model includes electrical transmit impedance, acoustic receive impedance, and the impulse or pulse-echo response. The ultrasound beam profile simulation provides the calculated transmitted ultrasound pressure field under certain excitation for a given transducer aperture in a number of different geometrical configurations, including circular elements (flat and concave piston), rectangular elements, linear arrays, convex arrays, and 2D arrays. The simulation is based on Field II, which is a free program that utilizes the spatial impulse response method, and has been validated by many researchers for accuracy. In addition to the web based acoustic simulation, we also provide pulse-echo system, transducers, and customized design and develop services.
Transducer KLM Model Simulation
Beam Profile Simulation
Frequency, Velocity, and Wavelength
Transducer Acoustic Stack
Transducer RLC Model
Flat Piston Transducer
Concave Piston Transducer
Ultrasound Transducer Acoustic Stack:
Center Frequency: MHz
Sound Velocity in PZT: m/s
Dielectric Constant of PZT: ε
Area of the aperture: mm
Parameters: PZT thickness; |Z|; Stactic capacitance
Ultrasound transducer is a capacitor structure and static capacitance is determined by the area, dielectric constant, and thickness. The thickness is half wavelength at the design frequency. The transmit electrical impedance of the ultrasound transducer at the design frequency approximately equals to that of the static capacitor.
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