Title :
New s.a.w. time-inversion system
Author :
Messer, H. ; Bar-Ness, Y. ; Gilboa, H.
Author_Institution :
Tel-Aviv University, School of Engineering, Tel-Aviv, Israel
Abstract :
A new s.a.w. time-inversion system is described. It requires fewer chirp-filter elements than those required with the common method of cascading two Fourier or Fresnel transformations. This new method is based on the fact that the Fourier transform of a linear f.m. signal whose envelope is modulated by a given time function has (approximately) the time-inverted function as its amplitude. Theoretical discussion and some experimental results are included.
Keywords :
signal processing; surface acoustic wave devices; Fresnel transformations; SAW; cascading Fourier transformations; chirp filter element; envelope; inverse chirp transform system; time inversion system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790150
