Wave transmission lines and networks – Coupling networks – Delay lines including elastic surface wave propagation means
Patent
1978-10-20
1980-06-24
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Delay lines including elastic surface wave propagation means
310 26, 310313, 333154, 364821, 364823, H03H 926, H03H 930, H03H 904
Patent
active
042097592
ABSTRACT:
The invention relates to an interaction device comprising a non-magnetic substrate, a thin easy-plane magnetic layer, two piezoelectric transducers arranged at the ends of the magnetic layer and respectively receiving the two electrical signals to be treated. The signals applied are converted into elastic surface waves which are transmitted to the magnetic layer in the form of magnetoelastic waves propagated in opposite directions. The device is subjected to an external magnetic field. The variations in magnetization in the interaction zone are collected by a detection plate and characterize the interaction between the two signals.
REFERENCES:
patent: 3353118 (1967-11-01), Olson et al.
patent: 4078186 (1978-03-01), Folen et al.
Lagasse et al.-"Acoustic Surface Waveguides-Analysis and Assessment", Proc. on Microwave Theory and Techniques, vol. MTT21, No. 4, Apr. 1973; pp. 225-236.
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Khuri-Yakub et al., "Monolithic Waveguide Zinc-Oxide-on-Silicon Convolver", Electronics Letters, 27 May 1975, vol. 12, No. 11; pp. 271-272.
Penunuri-"Surface Acoustic Wave Velocities of Isotropic Metal Films on Selected Cuts of Bi.sub.12 GeO.sub.20, Quartz, Al.sub.2 O.sub.3 and LiNbO.sub.3 ", IEEE Trans on Sonics and Ultrasonics, vol. SU21, No. 4, Oct. 1974; pp. 293-295.
Ganguly et al.-"The Magnetic Control of Surface Elastic Waves in a Novel Layered Structure", AIP Conference Proceedings, No. 34, 1976; pp. 259-261.
Luukkala et al.-"Convolution and Time Inversion Using Parametric Interactions of Acoustic Surface Waves", in Applied Physics Letters, vol. 18, No. 9, 1 May 1971; pp. 393-394.
"Thomson-CSF"
Nussbaum Marvin L.
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