H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/58
H01Q 21/29 (2006.01) H01Q 3/26 (2006.01)
Patent
CA 2024380
19 ABSTRACT OF THE DISCLOSURE This antenna system has a plurality of elementary antennas configured into an array, wherein there is a reception (or transmission) channel associated with each antenna or sub-array of antennas, said reception channel having, in series: - an active reception module, - delay means capable of selectively introducing a pure delay of propagation of the signal picked up by the elementary antenna so as to produce a gradation of delays for the different respective elementary antennas, said gradation of delays enabling the definition of a desired pointing in the direction of the wave to be received with respect to the orientation proper to the array; - and an analog/digital converter receiving, at input, the analog signal received, to deliver, at output, a corresponding digitized signal to a beam forming computer. The delay means are digital means, positioned at output of the analog/digital converter and typically comprise a digitally programmable delay generator comprising a programming input that receives a digital control word, defining the delay to be produced, from a pointing computer, a triggering input that receives pulses digitally representing the signal to be delayed and a signal output delivering the delayed signal pulses. Figure 2
Champeau Andre
Maclman Serge
Champeau Andre
Goudreau Gage Dubuc
Maclman Serge
Thompson-Csf
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