Saw monolithic convolver using dispersive transducers

Details Saw monolithic convolver using dispersive transducers Saw monolithic convolver using dispersive transducers

1981-10-28

1984-09-25

Gruber, Felix D.

Boots, shoes, and leggings

310313B, 310313R, 333195, G06G 7195, H01L 4108, H03H 930

Patent

active

044738889

ABSTRACT:
Disclosed is an improved SAW monolithic convolver using dispersive interdigital transducers designed by a novel technique that allows systematic compensation of phase errors arising in other parts of the convolver. The invention involves a small change in the positional relationship among the electrodes in the input transducers. This change is calculated to be just sufficient to cause a phase error exactly equal to, but of opposite sign to, the aforementioned phase errors.

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patent: 4428062 (1984-01-01), Michaels
Potter et al: Surface Acoustic Wave Slanted Device Technology, IEEE Transions on Sonics and Ultrasonics, vol. SU-26, No. 6, Nov. 1979, 411/418 in 364/821.
Becker et al: Wideband LiNbO.sub.3 Elastic Convolver with Parabolic Harus, 1979, Ultrasonics Symposium, Ref. in 369-821.
"Synthesis Procedure for Unapodized Nondispersive Surface Wave Filters" by W. R. Smith, pp. 117-119 of 1973, IEEE G-MTT International Microwave Symposium Digest of Technical Papers.
"Design of Unapodized Surface-Wave Transducers with Spectral Weighting" by Nudd et al, pp. 25-31 of `Transactions on Microwave Theory and Techniques`, vol. MTT-22, No. 1, 1/74.
"Acoustic Signal Processing Devices" by W. R. Smith of Technical Report ECOM-0175-1, Semi-Annual Report.

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