FIELD: physics, computer engineering.
SUBSTANCE: invention relates to radio engineering and electronics and can be used to protect information of computer equipment, automated workstations and wire lines from information leakage as a result of stray electromagnetic radiation and cross talk. The noise signal generator has two outputs which are controlled based on signal strength. The additional noise signal generator used is an impact avalanche transit time noise diode with an amplifier and a variable resistor for controlling the additional noise signal strength, and the emitting low-frequency element used is an inductance coil with distributed parameters, which enables to generate the low-frequency part of the magnetic component o the electromagnetic field of the noise signal.
EFFECT: wider spectrum of the output noise signal in the region of low and high frequencies, high uniformity of spectral power density of the noise signal, enabling control of noise signal strength.
4 cl, 1 dwg
