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A method for the design as well as implementation of FPGA-based Direct digital synthesizer (DDS) is firstly presented in this paper. And then corresponding system simulation and experimental results are given. The DDS for generating a sinusoidal signal owns the features of simple circuit, easy to be controlled, stable performance, high frequency conversion speed and fine accuracy etc. And its output...
This paper developed a novel power harmonic analyzer system based on ARM and FPGA, aiming at reducing the spectrum leakage caused by fixed-frequency sampling. It focused on the design of system architecture, preprocessing circuit, digital multiplier circuit based on FPGA. The comparison of harmonics analysis by using fixed-frequency and frequency tracking samples show that the latter can reduce spectrum...
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