Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

1979-12-03

1982-01-05

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333153, 333194, H03H 964, H03H 972

Patent

active

043096794

ABSTRACT:
In a conventional surface acoustic wave ring filter, a time-compensation element in the form of a thin strip is additionally provided for either retarding or accelerating one of the surface acoustic waves which transmit along different transmission lines, thereby the phases of two surface acoustic waves received by a single output converter included in the filter are matched with each other resulting in the improvement in the output signal characteristics.

REFERENCES:
patent: 3743973 (1973-07-01), Jones
patent: 3883831 (1975-05-01), Williamson et al.
patent: 3972011 (1976-07-01), Coussot et al.
patent: 4114119 (1978-09-01), Sandy et al.
patent: 4130813 (1978-12-01), Sandy et al.
Sandy et al.-"Surface Acoustic Wave Ring Filter", 1976 Ultrasonics Symposium Proceedings, IEEE Cat. No. 76 CH1120-1125SU; pp. 391-396.

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