Multiparameter Analysis of the Ultrasonic Transducer Transfer Function Using a Genetic Algorithm

The transfer function is an important parameter describing ultrasonic transducers which are designed to operate in various media. typically high impedance of piezoelectric matched a particular loading medium (gas, liquid, biological medium) by using multicomponent matching layers, have specific impedances and thicknesses accordance with the generally known criteria: Chebyshev, DeSilets or Souquet. When properly selected, materials used for layers allow most optimal parameters be obtained both transmitting receiving energy. However, studies rarely focus on possibility shaping function, also that some applications intended pulse operation, especially liquid media (e.g., hydroacoustics) ultrasound imaging). values shapes such influenced factors identical layers. This article presents possibilities advantages genetic algorithm shape characteristics functions importance search (typically greatest) bandwidth transducer operation medium.