Interference rejecting logarithmic receiver

摘要

1. A pulsed signal receiver comprising A PAIR OF ANTENNAS HAVING NON-IDENTICAL RADIATION CHARACTERISTICS FOR RECEIVING DESIRED PULSED SIGNALS AND INTERFERING SIGNALS OF HIGHER DUTY CYCLE THAN SAID DESIRED SIGNALS, A PAIR OF LOGARITHMIC RECEIVER CHANNELS RESPECTIVELY COUPLED TO SAID ANTENNAS, MEANS COUPLED TO SAID CHANNELS FOR DIFFERENTIALLY COMBINING THE OUTPUTS THEREOF, AND A FAST TIME CONSTANT CIRCUIT COUPLED TO THE OUTPUT OF SAID DIFFERENTIALLY COMBINING MEANS, SAID CIRCUIT BEING ADAPTED TO TRANSMIT SAID DESIRED SIGNALS AND TO REJECT ALL OTHER SIGNALS HAVING A DUTY CYCLE HIGHER THAN THAT OF SAID DESIRED SIGNALS.