FIELD: electronic computer engineering. SUBSTANCE: digital frequency synthesizer designed to synthesize signals at modulation frequency in radars and adaptive communication systems has clock generator, delay unit, two read-only memory units, , presetting counter, two storage registers, two accumulators, code converter, digital-to-analog converter, low-frequency filter, and pulse shaper. EFFECT: extended linearity of frequency variation and improved speed. 1 cl, 2 dwg
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