Anti-jamming using dual channel multi-frequency null-steering approach

An anti-jamming circuit for null-steering jamming radio-frequency (RF) signals, comprising:

• at least one input circuit adapted to:
• receive a plurality of RF signals from a plurality of antenna elements, and
• produce a plurality of signal groups each corresponding to a respective one of a plurality of frequency bands, each signal group comprises a respective pair of filtered signals received from a respective pair of the plurality of antenna elements each mapping a respective one of the plurality of RF signals in the respective frequency band;
• a feedback circuit adapted to:
• adjust the amplitude and/or the phase of at least one filtered signal of each signal group according to comparison between the pair of filtered signals of the respective group until a difference between the amplitudes of the adjusted signals of each signal group is minimized and their phases are opposite,
• aggregate the pair of adjusted signals of each signal group to produce a plurality of aggregated group signals, and
• aggregate the plurality of aggregated group signals to produce an overall aggregated signal;
• and
• an output circuit adapted to output the aggregated signal to at least one receiver adapted to extract data from the aggregated signal.