ANTI-JAMMING USING DUAL CHANNEL MULTI-FREQUENCY NULL-STEERING APPROACH
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United States of America
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Nov 28, 2024
app pub date -
May 23, 2023
filing date -
May 23, 2023
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Abstract
An anti-jamming circuit for null-steering jamming Radio-Frequency (RF) signals, comprising (1) an input circuit for receiving RF signals from multiple distinct antenna elements, and producing a plurality of signal groups each comprising a respective pair of filtered signals received from a respective pair of antenna elements each mapping them in one of the plurality of frequency bands, (2) a feedback circuit for adjusting the amplitude and/or the phase of the filtered signals of each signal group according to comparison between its pair of filtered signals until a difference between their amplitudes is minimized and their phases are opposite, aggregating the pair of adjusted signals of each signal group to produce a aggregated group signals, and aggregating the plurality of aggregated group signals to produce an overall aggregated signal, and (3) an output circuit for outputting the aggregated signal to a receiver adapted to extract data from the aggregated signal.
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