Title :
Limited diffraction maps for pulsed wave annular arrays
Author_Institution :
Center for Fast Ultrasound Imaging, Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
A procedure is provided for decomposing the linear field of flat pulsed wave annular arrays into an equivalent set of known limited diffraction Bessel beams. Each Bessel beam propagates with known characteristics, enabling good insight into the propagation of annular fields to be obtained. Numerical examples are given in the context of a 10-ring annular array operating at a central frequency of 2.5 MHz in water.
Keywords :
Bessel functions; Fourier series; ultrasonic propagation; water; 2.5 MHz; H2O; diffraction maps; limited diffraction Bessel beams; pulsed wave annular arrays; Diffraction; Fourier transforms; Frequency; Partial differential equations; Propagation losses; Quantization; Sampling methods; Surface waves; Transducers; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1193457
