FIELD: computer engineering; control systems.
SUBSTANCE: present invention relates to radio camouflaging stray electromagnetic radiation and picking up noise of computer equipment and control systems. The device contains a low-frequency noise source, an active antenna circuit and a noise source, which is made in form of a system of two connected generators, the first of which is a generator with delayed feedback and inertial auto-displacement, and the second - with regulated delayed feedback. The output of the first generator is connected to the input of the second generator using a coupling element, which is a non-directional T junction with step impedance-matching transformers. One arm of the coupling element is connected to a flat spiral antenna.
EFFECT: widening of the operating range in the high frequency band and reduced non-uniformity of spectral density of the camouflage noise signal.
6 dwg
