Transducer for a filter arrangement with acoustic waves

Details Transducer for a filter arrangement with acoustic waves Transducer for a filter arrangement with acoustic waves

1987-08-19

1988-09-27

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313B, 333194, 333196, H03H 9145, H03H 925, H03H 964

Patent

active

047744820

ABSTRACT:
A transducer for a filter arrangement with acoustic waves which includes a transducer 1 and 2 comprising groups (3, 4, 6 and 7) of alternating interdigitally spaced electrode fingers (10) in which the neighboring groups (3, 4 or, respectively, 4, 3 or, respectively, 6, 7) are arranged so that they are 80 degrees out of phase relative to each other at the fundamental frequency of the groups.

REFERENCES:
patent: 3792381 (1974-02-01), Bristol
patent: 3801937 (1974-04-01), Bristol
patent: 4144507 (1979-03-01), Shreve
patent: 4616197 (1986-10-01), Wright
Surface Wave Filters, Design, Construction, and Use, John Wiley & Sons, A Wiley-Interscience Publication, D. T. Bell, Jr. and Claiborne Phase Code Generators and Correlators, pp. 307-346.
IEEE Transactions on Circuit Theory, vol. CT-20, No. 5, Sep. 1973-Acoustic Surface-Wave Transversal Filters, George L. Matthaei, pp. 459-470.

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