Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1977-05-02
1978-12-19
Smith, Alfred E.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
333 72, H03H 902, H03H 926
Patent
active
041308123
ABSTRACT:
A band pass electromechanical filter of the type comprising an input electromechanical transducer and an output electromechanical transducer and a mechanical filter vibrating in compression-extension mode, disposed between said transducers and comprising a plurality of cylindrical resonators connected to one another by coupling rods, each resonator being formed with a flat portion at the end(s) upon which at least one coupling rod should be secured, each coupling rod being welded onto said flat portion along one generatrix, said generatrix being parallel to the resonator axis, each coupling rod having its end in abutment with a shoulder which terminates the flat portion, the cross-sectional area of the resonator outside the flat portion being equal to the sum of the cross-sectional area of the resonator in the section comprising the flat portion and the cross-sectional areas of the coupling rod(s) secured on said flat portion.
Nussbaum Marvin
Smith Alfred E.
Societe Anonyme de Telecommunications
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