The design of Double channels of Same-frequency Singnal source with controllable phase on FPGA
Xiaojing Chen · Microcomputer Information · 2010
In this paper, the principle of the direct digital frequency synthesis (DDS) technology is introduced. Then the design scheme of sine signal generator with the double same-frequency channel is presented based on FPGA. Besides, the software program and experimental results are given at the last part of the paper. The conclusions drawn from the experimental results show that the output of the double channels sine signal source have characteristics of small waveform distortion, frequency and phase accuracy. In addition, the frequency and phase are adjustable in real time.