Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

1983-07-29

1985-05-07

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313B, 333154, 333194, 333196, H03H 9145, H03H 964

Patent

active

045160937

ABSTRACT:
A surface acoustic wave (SAW) filter features a ground lead in a transducer that has an aperiodic meander structure. This arrangement permits the self-capacitance and inherent resistance of the transducer to be utilized in forming the RC networks of a phase shifter associated with the transponder.

REFERENCES:
patent: 3770949 (1973-11-01), Whitehouse et al.
patent: 3800248 (1974-03-01), Speiser et al.
patent: 3866154 (1975-02-01), Moore
patent: 4200849 (1980-04-01), Malocha
patent: 4429246 (1984-01-01), Miyajima
Kallard (editor)-"Acoustic Surfacewave and Acousto-Optic Devices", Optosonic Press, New York, N.Y., copyright 1971, title page and pp. 81-87.
"Mikrowellenakustic" (Microwave Acoustics), Technische Rundschau, No. 16, Apr. 18, 1978, p. 17.
Hewlett-Packard Journal, Dec. 1981, p. 5, (FIG. 3).
"I.E.E.E. Group on Sonics and Ultrasonics", Ultrasonic Symposium, Sep. 22-24, 1975, pp. 317-321.
6th European Microwave Conference 1976, Rome, Sep. 14-17, 1976, AEI, pp. 267-271.

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