Surface wave apparatus

Details Surface wave apparatus Surface wave apparatus

1975-03-05

1976-10-19

Borchelt, Archie R.

Wave transmission lines and networks

Coupling networks

With impedance matching

310 93, 310 98, 333 72, H03H 906, H03H 926, H03H 932, H03H 930

Patent

active

039873781

ABSTRACT:
A surface wave apparatus which comprises an insulation substrate having a smooth surface; a surface wave conversion interdigitated electrode evaporated on the smooth surface of the insulating substrate; a piezoelectric plate, on the smooth surface of which the insulation substrate is mounted at a prescribed space in contact with the electricity-surface wave conversion interdigitated electrode; an insulation liquid layer provided between the smooth surface of the piezoelectric plate and the electricity-surface wave conversion interdigitated electrode as well as between the smooth surface of the piezoelectric plate and the smooth surface of the insulation substrate.

REFERENCES:
patent: 3360749 (1967-12-01), Sittig
patent: 3665225 (1972-05-01), Van Den Heuvel et al.
patent: 3684970 (1972-08-01), Wang
patent: 3786373 (1974-01-01), Schulz et al.
patent: 3818382 (1974-06-01), Holland et al.
van Den Heuvel et al., -- "The Hybrid Transducer" Paper C-8, IEEE Ultrasonics Symposium St. Louis, Mo. Sept. 24-26, 1969, pp. 1-8.

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