Simplified frequency agility frequency synthesizer based on DDS non-linear characteristics

The utility model discloses a simplified frequency agility frequency synthesizer based on DDS non-linear characteristics relating to the direct digital frequency synthesis technology field. The object of the utility model is to provide a frequency agility frequency synthesizer having a small size and low costs. The utility model is characterized in that a clock circuit, a DDS chip, a frequency control circuit, and a frequency selection circuit are provided; an output end of the clock circuit is connected with a clock signal input end of the DDS chip; an output end of the frequency control circuit is connected with a frequency control end of the DDS chip; and a frequency output end of the DDS chip is connected with an input end of the frequency selection circuit.