Surface wave interdigital transducer and surface wave filter wit

Details Surface wave interdigital transducer and surface wave filter wit Surface wave interdigital transducer and surface wave filter wit

1994-03-18

1996-05-28

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333193, 333196, 310313B, 310313R, H03H 964

Patent

active

055215653

ABSTRACT:
A surface acoustic wave interdigital transducer of a filter includes split finger electrodes in pairs. To achieve a desired transfer characteristic that is either symmetrical or deliberately asymmetrical, a number of the pairs of the split finger electrodes are replaced by single finger electrodes.

REFERENCES:
patent: 3870975 (1975-03-01), Vasile
patent: 3979702 (1976-09-01), Hunsinger et al.
patent: 3987376 (1976-10-01), Kerbel
patent: 4146808 (1979-03-01), Laker et al.
patent: 4468642 (1984-08-01), Hikita
patent: 4602228 (1986-07-01), Yamada
patent: 5162689 (1992-11-01), Fliegel et al.
"Synthesis of Periodic Unapodized Surface Wave Transducers", Ultrasonics Symposium: IEEE Ultrasonices Symposium proceedings, 1972, pp. 377-380.

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