DocumentCode
944923
Title
A SAW planar piezoelectric convolver
Author
Defranould, Philippe ; Maerfeld, Charles
Author_Institution
ASM Division of Thomson-C.S.F., Cagnes-sur-Mer, France
Volume
64
Issue
5
fYear
1976
fDate
5/1/1976 12:00:00 AM
Firstpage
748
Lastpage
751
Abstract
An increase of the dynamic range of a surface-wave piezo-electric convolver can be obtained by increasing its bilinear factor. We show that this can be done by reducing the acoustic beamwidth in the interaction region. A lower limit of beamwidth is found through the study of the guided modes in the convolver plate. A 600-BT product device using nonsymmetrical couplers to obtain the beamwidth reduction is described. The main characteristics-bandwidth, dynamic range, spurious signals-are given and we show a linear FM pulse autocorrelation performed in this device.
Keywords
Acoustic devices; Acoustic waves; Convolvers; Couplers; Dynamic range; Frequency modulation; Impedance; Nonlinear acoustics; Surface acoustic waves; Voltage;
fLanguage
English
Journal_Title
Proceedings of the IEEE
Publisher
ieee
ISSN
0018-9219
Type
jour
DOI
10.1109/PROC.1976.10203
Filename
1454472
Link To Document