DIGITAL RADIO DEVICE WITH BUILT-IN MASKING OF ELECTROMAGNETIC CHANNEL OF SPEECH INFORMATION LEAKAGE Russian patent published in 2019 - IPC H04K3/00 H04B15/02 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used to create promising digital radio devices with a programmable architecture in the presence of secondary electromagnetic fields and interference to ensure confidentiality of speech radio communication. Device further includes in-series connected a noise signal source unit with uniform distribution of instantaneous amplitude values (15), a third low-pass filter (16), a signal scaling unit (17), summation unit (18) and switch (19), the output of which is connected to the input of controlled generator (13). Second output of modem unit (4) is connected to the other input of summation unit (18). First control output of modem unit (4) is connected to control input of switch (19).

EFFECT: technical result consists in improvement of protection of radio device from leakage of voice information on electromagnetic channel of direct passage, when meeting requirements for electromagnetic compatibility of radioelectronic equipment at specified energy characteristics of radio transmission system and probability of erroneous reception.

1 cl, 2 dwg