Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1977-12-21
1979-08-07
Smith, Alfred E.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333, H03H 926, H03H 924, H03H 904
Patent
active
041639600
ABSTRACT:
An electromechanical filter comprising resonators interconnected by couplers and at least one bridge strapping over several resonators in which said resonators are longitudinally vibrating, said couplers and bridge are bending and the number of strapped resonators is a multiple of four. Such a filter shows improved phase characteristic within the pass band.
REFERENCES:
patent: 3336541 (1967-08-01), Ura
patent: 3445792 (1969-05-01), Borner et al.
patent: 4060774 (1977-11-01), Ernyei
Ernyei Herbert
Langlois Etienne
Nussbaum Marvin
Smith Alfred E.
Societe Lignes Telegraphiques et Telephoniques
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