Surface-acoustic-wave device

Details Surface-acoustic-wave device Surface-acoustic-wave device

1989-04-11

1991-07-16

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

329300, 333196, 364821, 375 96, H03D 904

Patent

active

050330632

ABSTRACT:
A surface-acoustic-wave device includes at least two surface-acoustic-wave transducers made from metal and disposed along a surface acoustic wave propagating direction on a piezoelectric substrate. At least one of the transducers has a different bandwidth, and a convolver output gate electrode in the form a rectangular metal layer is provided between the transducer having the different bandwidth and another transducer.

REFERENCES:
patent: 4543547 (1985-09-01), Picquendar et al.
patent: 4592009 (1986-05-01), Masheff
patent: 4897659 (1990-01-01), Mellon
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Junichi Tominaga, Kimio Shibayama, "Surface-Acoustic-Wave MSK Matched Filter and its Application", Transactions on Electronic Communication Academy, '85/12, vol. J68-C, No. 12, pp. 1044-1052.
W. R. Smith, "SAW Filters for CPSM Spread Spectrum Communications", 1977, Ultrasonics Symposium Proceedings, pp. 524-528.
I. Yao, "High Performance Elastic Convolver with Parabolic Horns", 1980, Ultrasonics Symposium, pp. 37-42.
S. Minagawa et al., "Efficient ZnO-SiO.sub.2 -Si Sezawa Wave Convolver", IEEE Transactions on Sonics and Ultrasonics, vol. SU-32, No. 5, 1985, pp. 670-674.
B. T. Khuri-Yakub, G. S. Kino, "A Detailed Theory of the Monolithic Zinc Oxide on Silicon Convolver", IEEE Transactions on Sonics and Ultrasonics, vol. SU-24, No. 1, 1977, pp. 34-43.

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