Assembly for filtering by switching

Details Assembly for filtering by switching Assembly for filtering by switching

1980-06-27

1983-03-29

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

328151, 333172, H03H 1900

Patent

active

043785387

ABSTRACT:
The present invention relates to an assembly for filtering by switching, comprising at least one filter with switched paths and means for applying to each of the filters signals for controlling switching of the paths, said assembly further comprising means for memorizing the output signal of the filter and a mixer circuit whose input receives at a given instant the signal to be filtered; a second input receives at this instant the memorized value which the output signal had, an instant earlier, separated from the instant in question by a whole number of periods of the useful component of the input signal. The invention is applicable to harmonic analysis, telecommunications, filtering of composite signals.

REFERENCES:
patent: 3531741 (1970-09-01), Langer
patent: 3613030 (1971-10-01), Fjallbrant
Borelli-"Commutated Networks Employing Feedback Circuits", IEEE Trans. on Aerospace and Electronic Systems, vol. AES5, No. 1, Jan. 1969, pp. 39-35.

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