FIELD: radio equipment; electronics.
SUBSTANCE: invention relates to the field of radio engineering and electronics and can be used to protect information processed by computer equipment from leakage through the channels of secondary electromagnetic radiation. Device includes a block for detecting the clock frequency of an automated system, to its input a narrowly directional antenna is connected, and its output through the first isolation capacitor and the resistor with variable resistance is connected to the second input of the power amplifier, to the first input of which a noise signal generator is connected via a second isolation capacitor and a resistor with a variable resistance, and the output of the amplifier via a third isolation capacitor and a resistor with variable resistance is connected to a wide-directional antenna, while the amplifier is in a non-linear amplification mode. Device can be used to protect information with any information processing means without any additional matching devices. As a block for detecting the clock frequency, a simple spectrum analyzer operating in the range from 20 to 168 MHz can be used.
EFFECT: technical result consists in electromagnetic compatibility and increase of protection efficiency.
1 cl, 1 dwg
