DISTORTION OF COMPLEX SIGNALS IN RADAR FREQUENCY CONVERTERS IN THE PRESENCE OF HETERODYNE-VOLTAGE INSTABILITY.

Much attention is now being paid to radio systems that employ coherent processing of complex microwave (MW) signals, which permits a substantial improvement in the energy and accuracy characteristics of the radio systems, but with a sharp increase in the amount of distortion of signals in amplifier-converter channels. Signal distortion by modulating interference is determined in such systems by the parameters of the signal interdeterminacy function. It is important to determine the way in which the levels of the undistorted part and the interference component of this function depend on heterodyne-voltage instability in the millimeter waveband, since the avalanche-drift diodes (ADD) and Gunn diodes (GD) used as oscillators in this band have good modulation sensitivity with respect to amplitude and frequency. Formulas are derived which make it possible to evaluate the influence of the characteristics of heterodyne active elements and parameters of the heterodyne power source on signal distortion in frequency converters.