DEVICE FOR TUNING A VCO TO THE CARRIER FREQUENCY OF EACH RADAR PULSE

摘要

Electronic device for rapidly tuning a voltage controlled oscillator to the radar carrier frequency of each of the individual radar pulses. A frequency discriminator (1) of the quadricorrelator type is supplied with the incoming pulses and with the output of the VCO (5) to provide the control voltage to the VCO (5) via amplifying stages (2), (4) and a sample-and-hold circuit (3) that maintains the tuned frequency for time durations greater than 100 mu sec. The operating frequency range of the device is between 6GHz - 18 GHz.