【摘要】 为设计一种频率连续可调、频带宽、幅值稳定、波形平滑的正弦信号发生器,采用可编程逻辑阵列和锁相环技术相结合,对正弦波形进行多频段数字拟合,从而在很宽的频带内都能得到高精度的正弦波。阐述了系统结构和设计原理,并用实验结果表明该方案的可行性。更多还原

【Abstract】 In order to get a sine wave generator with continuously tuning, wide frenquency band, stable amplitude and smoothing wave shape, the sine wave shape is digitally fitted at several frequency bands by means of programmable logic array and phase-locked loop. The structure and design principle of the system are described, and the experiment results show its feasibility.更多还原