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
Flat Piston Aperture Radiation Field:
Center Frequency: MHz
Aperture Diameter: mm
Parameters: Length of Near Field; Main Lobe Width
At depth of
At angle of
deg to the aperture center line
The normalized acoustic intensity is
The acoustic radiation pattern or beam profile from a flat piston ultrasound transducer is the most fundamental part of the ultrasound imaging resolution theory. The lateral resolution is determined by the ultrasound beam width which is a function of aperture diameter and frequency. For given frequency and aperture diameter, the calculator will give the length of near field or Fresnel zone, and the width of main lobe. At given distance, with a small angle to the central axis, the normalized intensity is calculated.
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