Ultrasound Transducer Simulation Page
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.
ultrasound beam simulation longitudinal view
ultrasound beam simulation cross view
Ultrasound Calculation
Tune Transducer with one Inductor: Center Frequency: MHz
|Z|: Ω
θ: º
Impedance Real Part
Impedance Imaginary Part

Ultrasound transducer has a capacitor structure and it has a capacitance component at the design frequency in most cases. This imaginary part of impedance will cause severe reflections when the ultrasound transducer is connected a transceiver through a long cable. To simply remove this reactance, a series or parallel inductor tuning is enough. At given working frequency, for given impedance in |z| - θ, or Real-Imaginary format, the calculator will calculate the required inductor value in both series and parallel mode. A parallel inductor tuning leads to a higher final impedance compared to the series inductor tuning. For complicated electrical matching network, which will tune the impedance to a desired real resistance at center frequency while keep a nice echo shape, a customized design can be submitted.

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