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

You are welcome to the ultrasound discussion area. Your questions will be answered if they fall into the following categories:
  • Piezo-electrical material
  • Basic acoustic or ultrasound
  • Ultrasound imaging theory
  • Ultrasound transducer simulation, design and fabrication
  • Ultrasound beamforming architecture, algorithm, and related electronics.
  • Ultrasound transceiver, analog front-end.
  • Ultrasound imaging display algorithm

Back to main forum-New Topic-Reply
Kevin PhilipsLast replied to at October 25, 2015, 10:31 am


I've made an impedance measurement of a PST 150/2x3/5 peizo actuator(Datasheet, P30 - http://electronix.ru/forum/index.php?act=Attach&type=post&id=6158), which has a resonant frequency of 120kHz. The result i get is shown here - http://s22.postimg.org/hkeqirjnl/Piezo.png.

What could possibly causing the resonant and anti-resonant frequencies to be significantly higher than the resonant frequency stated in the datasheet

I made the measurements with an Agilent Technologies Impedance Analyzer.

Any help is grateful, as i can't figure what the issue is.

PJLast replied to at March 21, 2015, 5:54 pm

Resonant frequency you got is much higher than the datasheet claimed. Possibly two reasons:
1: excitation voltage. Sometimes at working excitation, frequency maybe lower than testing voltage, which is much lower.
2: Testing condition, is there a load required?