Filter having frequency-dependent transmission properties for el

Details Filter having frequency-dependent transmission properties for el Filter having frequency-dependent transmission properties for el

1973-10-01

1976-06-29

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

333 70R, G06F 1534, H03H 710

Patent

active

039670996

ABSTRACT:
In one illustrative embodiment, a basic filter circuit for discrete signals is provided corresponding in filter function to an analog ladder network containing inductive and capacitive components. The reactive components of the analog filter structure are realized in the basic filter circuit as one-port and two-port elements having time delay, while non-reactive components of the analog filter are realized as time-delay-free one-port and plural-port elements. Interface means connect the port elements together in a configuration corresponding to the configuration of the analog filter, with sets of adder and multiplier means of the interface circuitry which couple successive sets of the port elements to each other being correlated with the connective relationship (whether series, series-parallel or parallel) between the corresponding components or branches of the analog filter and with the parameters of the analog components, so that the basic filter circuit essentially simulates the analog filter structure in its filter characteristics.

REFERENCES:
patent: 3370292 (1968-02-01), Deerfield
patent: 3543012 (1970-11-01), Courtney
patent: 3609568 (1971-09-01), Jackson
patent: 3619586 (1971-11-01), Hoff et al.
patent: 3648171 (1972-03-01), Hirsch
patent: 3676654 (1972-07-01), Melvin

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