Wave transmission lines and networks – Coupling networks – Delay lines including elastic surface wave propagation means
Patent
1981-05-18
1983-06-14
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Delay lines including elastic surface wave propagation means
333153, 333164, 333161, 364821, H01L 4108, H03H 930
Patent
active
043885993
ABSTRACT:
A convolver based on the propagation of acoustic waves at the surface of a piezoelectric solid comprises a piezoelectric substrate, means for exciting two backward-traveling acoustic waves at the frequency f, means consisting of at least two electrodes for collecting the signal at the frequency 2f, the signal being produced as a result of nonlinear interaction of the two acoustic waves. The convolver device is connected to one of the two electrodes by means of a plurality of electrical contacts placed lengthwise and at intervals along the axis of propagation of the two interacting acoustic waves which are representative of the electrical signals applied to the two convolver inputs.
REFERENCES:
Shreve et al., "Strip Coupled Acoustic Convolvers", IEEE Proceedings of the Ultrasonics Symposium, Monterey, New York, (US), Nov. 5-7, 1978, pp. 145-147.
Adkins, "Strip Coupled A2N and Si on Sapphire Convolvers", IEEE Proceedings of the Ultrasonics Symposium, Monterey, New York (US), Nov. 5-7, 1978, pp. 148-151.
Kino, "Acoustoelectric Interactions in Acoustic-Surface-Wave Devices", Proc. of the IEEE, vol. 64, No. 5, May 1976, pp. 724-748.
Ludvik et al, "Nonlinear Interaction of Acoustic Surface Waves in Epitaxial Gallium Arsenide", Electronics Letters, vol. 8, No. 22, Nov. 2, 1972, pp. 551-552.
Gautier Herve
Maerfeld Charles
"Thomson-CSF"
Nussbaum Marvin L.
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