FIELD: physics.
SUBSTANCE: invention relates to means of controlling mines and other explosive objects having radio fuses and is intended for protection against radio-controlled explosive devices. Device comprises a generator of periodic nonlinearly varying voltage, a voltage-controlled oscillator (VCO), an inverter, a switch, a key control device, a band-pass filter, power amplifier and antenna. VCO generates a signal whose frequency f varies continuously over a time interval T according to a law determined by the generator of periodic varying voltage. Inverter inverts signal from VCO output. Signal from the VCO output and its inverted copy from the output of the inverter are supplied to the inputs of the switch, which successively in time outputs to the band-pass filter fragments of the signal from the output of the VCO and its inverted copy. Band-pass filter filters high-order harmonics occurring when switching the switch. Output signal from the band-pass filter is transmitted to the power amplifier where it is amplified and arrives at the antenna.
EFFECT: higher probability of guaranteed radio suppression at the same energy density of the interference signal in the protected range.
1 cl, 1 dwg
