Method of implementing programmable matched filters, and corresp

Details Method of implementing programmable matched filters, and corresp Method of implementing programmable matched filters, and corresp

1988-06-27

1990-05-01

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

333165, 364825, H04B 110

Patent

active

049225090

ABSTRACT:
The invention relates to a method of implementing programmable tuned filters, in particular for telegraph signal receivers, and also to tuned filters obtained by the method. A resonator (16) organized around a multipath filter and controlled by a first clock signal is associated with a comb filter (17) organized around a delay line (21) and controlled by a second clock signal, in order to constitute a tuned filter which is programmed by the clock signals. The invention is applicable to making programmable tuned filters and banks of such filters, in particular for remote protection equipment in grids for transporting electrical power.

REFERENCES:
patent: 3061680 (1962-10-01), Frankel
patent: 3886316 (1975-05-01), Getgen
patent: 4101853 (1978-07-01), Kosugi
patent: 4293831 (1981-10-01), Lueder
patent: 4338581 (1982-07-01), Morgan
patent: 4441090 (1984-04-01), Warren
R. Schreiber et al., IEEE Journal of Solid-State Circuits, vol. Sc16, No. 3, pp. 125-129, Jun. 1981, USA.
H. Kosugi, The Transaction of IECE of Japan, vol. E59, No. 8, p. 8, Aug. 1976, Japan.
O. Muller, Der Elektroniker, vol. 16, No. 6, pp. EL7-EL72, Jun. 1976, Switzerland.

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