Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1981-12-28
1984-11-27
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333 17R, 333196, 364821, 310313R, H03H 972, H03H 964, G06G 7195
Patent
active
044853637
ABSTRACT:
A signal processor for filtering unwanted narrowband noise from received wideband electrical signals also containing desired wideband noise is described. The signal processor includes means for partitioning the wideband received signal into a plurality of narrowband, noise-containing signals and for producing a plurality of narrowband output signals. The signal processor further includes means for monitoring each of the narrowband output signals and for reducing the voltage of any narrowband output signal when that signal exceeds a predetermined level. In the preferred embodiment, the monitoring means of the signal processor includes a plurality of voltage-regulating networks, wherein each network receives as a network input signal, a single one of said narrowband output signals into a detector and integrator network to produce an output command signal only when the voltage across a channel exceeds a predetermined level. The command voltage is used to reduce the voltage of the output of the narrowband channels accordingly.
REFERENCES:
patent: 3600708 (1971-08-01), King
patent: 3833867 (1974-09-01), Solie
patent: 4037174 (1977-07-01), Moore et al.
patent: 4224683 (1980-09-01), Adkins
patent: 4288765 (1981-09-01), Mikoshiba et al.
patent: 4353043 (1982-10-01), Gunton
Grant et al.--"Programmable Transversal Filtering Using the Surface Acoustic Wave Diode Convolver", Wave Electronics, 1 (1974/1976); pp. 381-386.
Hunsinger Billy J.
Merritt Sears W.
Swanson David A.
Gould Inc.
Nussbaum Marvin L.
Pierce K. H.
Sachs Edward E.
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