Pulse interference suppressor for radio receiver - uses control pulse whose duration is equal to interference pulse

摘要

The signal at the receiver l.f. stages (SB) output (a) is applied to a circuit comprising a high-pass filter (PA). There is a detector (RV) for interference pulses connected to its output (b) and controlling a trigger (CS) with generates control pulses of the same duration as detector (RV) output interference pulses. A scanning and holding circuit (CT) is connected to the l.f stage (SB) output (a). It stores the voltage value present at its input at the appearance of a control pulse, and maintains it during the whole control pulse duration.