Intermediate frequency side-lobe canceller
First Claim
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1. IN A NOISE CANCELLER, A MAIN SIGNAL TRANSMISSION CHANNEL HAVING AN OUTPUT TERMINAL, AN AUXILIARY SIGNAL TRANSMISSION CHANNEL HAVING AN OUTPUT TERMINAL, SAID CHANNELS HAVING CROSS COUPLING THEREBETWEEN, MEANS FOR DETECTING THE RELATIVE AMPLITUDE AND PHASE OF EACH OF THE CROSS COUPLED SIGNALS, A COMPENSATING CROSS FEED NETWORK CAPABLE OF ADJUSTMENT FOR MINIMIZING CROSS COUPLING AT AT LEAST ONE OUTPUT TERMINAL, MEANS RESPONSIVE TO SAID RELATIVE AMPLITUDE AND PHASE FOR AUTOMATICALLY ADJUSTING SAID CROSS FEED NETWORK IN ORDER TO MINIMIZE CROSS COUPLING.
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1 Claim
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1. IN A NOISE CANCELLER, A MAIN SIGNAL TRANSMISSION CHANNEL HAVING AN OUTPUT TERMINAL, AN AUXILIARY SIGNAL TRANSMISSION CHANNEL HAVING AN OUTPUT TERMINAL, SAID CHANNELS HAVING CROSS COUPLING THEREBETWEEN, MEANS FOR DETECTING THE RELATIVE AMPLITUDE AND PHASE OF EACH OF THE CROSS COUPLED SIGNALS, A COMPENSATING CROSS FEED NETWORK CAPABLE OF ADJUSTMENT FOR MINIMIZING CROSS COUPLING AT AT LEAST ONE OUTPUT TERMINAL, MEANS RESPONSIVE TO SAID RELATIVE AMPLITUDE AND PHASE FOR AUTOMATICALLY ADJUSTING SAID CROSS FEED NETWORK IN ORDER TO MINIMIZE CROSS COUPLING.
Specification