Accession Number : ADD009741

Title :   Multi-Tone Jammer.

Descriptive Note : Patent,


Personal Author(s) : Seidl,Loren R

Report Date : 27 Jul 1982

Pagination or Media Count : 4

Abstract : A waveform capable of jamming some or all of the channels of a multiple channel receiver is developed by a multi-tone jammer that uses a digital counter and a digital/analog converter to generate a ramp voltage for a voltage controlled oscillator (VCO). The output of the VCO is modulated by a pin diode attenuator. The attenuator is controlled by a pattern generator synchronized with the digital counter to blank the retrace and any portion of the sweep to provide a partial band tone jamming spectrum. The digital counter is driven by a MHz reference signal generator and the sweep repetition rate is greater than the circuit bandwidth. (Author)

Descriptors :   *Patents, *Electronic countermeasures, *Radio jamming, *Digital to analog converters, Sweep generators, Waveform generators, Jamming, Voltage controlled oscillators, Signal generators, Pin diodes, Pulse counters, Ramps, Multichannel, State of the Art, Receivers, Voltage, Bandwidth, Channels, Oscillators, Attenuators, Circuits

Subject Categories : Radio Countermeasures
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE