Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1977-01-31
1978-11-28
Smith, Alfred E.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
310367, H03H 904, H03H 926, H03H 932
Patent
active
041278330
ABSTRACT:
Filter chain comprising at least two cascaded duals, each provided with two acoustically coupled resonators, only one of the two resonant frequencies of each of the duals falling within the filter pass band; the duals are convex at least on one side so as to render the acoustic coupling between the resonators so strong that the distance between the two resonant frequencies of the dual is as great as possible.
REFERENCES:
patent: 2515979 (1939-05-01), Hawk
patent: 3638146 (1972-01-01), Takaku et al.
patent: 3983518 (1976-09-01), Bezemer
patent: 4017753 (1977-04-01), Ishiwata et al.
Bezemer Jan A.
Tromp Herman R. C.
De Staat der Nederlanden, te Dezen Vertegenwoordigd Door de
Kirk Hugh Adam
Nussbaum Marvin
Smith Alfred E.
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