Title :
Pulse compression acoustic microscopy at 750 MHz
Author :
Nikoonahad, M. ; Yue, G.Q. ; Ash, E.A.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
A pulse compression acoustic microscope working at a centre frequency of 750 MHz is reported. The pulse expansion and compression is achieved by SAW dispersive delay lines. The transmitted chirp has a bandwidth of 150 MHz and a dispersion of 1 MHz/ns. A processing gain in excess of 10 dB has been achieved.
Keywords :
acoustic microscopes; surface acoustic wave devices; ultrasonic delay lines; 750 MHz; SAW dispersive delay lines; processing gain; pulse compression acoustic microscope; pulse expansion; transmitted chirp;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830533
