Quadrature Signals Generator Based on FPGA
Hao Xiao-jiang · Ordnance Industry Automation · 2008
The basic Direct Digital Frequency Synthesis(DDFS)is modeled based on DSP Builder of FPGA,and the DDFS module realizes orthogonal signal generator.At the same time,adopt ModelSim and QuartuslI to realize the simulation of function simulation time sequence.The simulation result shows that the DDFS's frequency and phase can be adjusted flexibly,and has high resolution,while can fast shift between frequency and phase.