Title :
Limited diffraction beams from cylindrical arrays
Author :
Allexandre, D. ; Palmer, M.R.
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
The authors propose to launch limited diffraction beams called focus wave mode (FWM) from a cylindrical array. Using this new array geometry, the launching scheme is greatly simplified compare to conventional planar arrays. One single independent generator is used to generate all the driving source signals. It is shown that performance and reconstruction quality of the pulse launched from a cylindrical array are similar to those from circular arrays of same aperture size (same radius)
Keywords :
acoustic imaging; ultrasonic arrays; ultrasonic diffraction; ultrasonic imaging; array geometry; cylindrical array; cylindrical arrays; driving source signals; focus wave mode; launching scheme; limited diffraction beams; reconstruction quality; Apertures; Diffraction; Geometry; Paints; Partial differential equations; Planar arrays; Pulse generation; Shape; Signal generators; Surface reconstruction;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.584387
