Title :
P1G-9 Stepped Sine Versus Coded Pulse As Excitation Signals for Ultrasonic Transducer Calibration in a Non-Linear Propagation Field
Author :
Felix, Rodrigo Pereira Barretto da Costa ; Machado, João Carlos
Author_Institution :
Lab. of Ultrasound, Nat. Inst. of Metrol., Stand., & Ind. Quality, Duque de Caxias
Abstract :
Secondary calibration of a 2.25 MHz center frequency, 25.4 mm of diameter transducer was performed using two different excitation signals: chirp-coded pulse and a set of pure-tone busts. For some frequencies, measurements were performed in the near and/or distorted field. Chirp-coded excitation was more robust than pure-tone burst, resulting in better measurement with respect to distortion and diffraction occurrence
Keywords :
calibration; nonlinear acoustics; ultrasonic propagation; ultrasonic transducers; 2.25 MHz; center frequency calibration; chirp-coded pulse excitation; diffraction; distortion; nonlinear propagation field; pure-tone busts excitation; stepped sine excitation; ultrasonic transducer calibration; Calibration; Chirp; Diffraction; Distortion measurement; Frequency measurement; Nonlinear distortion; Performance evaluation; Robustness; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.359
