Surface acoustic wave resonators with integrated internal couple

Details Surface acoustic wave resonators with integrated internal couple Surface acoustic wave resonators with integrated internal couple

1979-03-13

1980-12-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333196, H03H 964, H03H 925, H03H 9145, H01L 4108

Patent

active

042374332

ABSTRACT:
A multiple track acoustic surface wave filter processes input signals successively flowing in coupled resonant acoustic tracks, each track being realized between pairs of surface wave reflectors in the surface of a planar piezoelectric substrate. The acoustic surface wave reflection and coupling devices are at least partially integrated so as to reduce the length of the structure.

REFERENCES:
patent: 3886504 (1975-05-01), Hartmann et al.
patent: 4130813 (1978-12-01), Sandy et al.
Schulz et al-Surface Acoustic Wave Delay Lines with Small Temperature Coefficient, Proceedings IEEE (USA) vol. 58, No. 9, Sep. 1970; pp. 1361-1362.

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