Title :
Surface-wave parametric signal processing
Author :
Shreve, W.R. ; Kino, G.S. ; Luukkala, M.V.
Author_Institution :
Stanford University, Stanford, USA
Abstract :
The parametric interaction of surface-wave signals propagating in opposite directions on a lithium-niobate substrate has been used to obtain the crosscorrelation of digitally coded input signals. The output 4 cm interdigital transducer was separated from the substrate by a 2000 Ã… SiO2 layer to eliminate scattering into volume waves. Matched-filter responses for both amplitude-modulated and biphase Barker codes of up to 13 bits have been obtained.
Keywords :
acoustic microwave devices; correlators; parametric devices; signal processing; 4 cm interdigital transducer; biphase Barker codes; crosscorrelation of digitally coded input signals; parametric interaction of surface waves;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710522
