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本文介绍了一种新型的数字倍频器,它具有许多不同于已有倍频器的特性。其特性有:(1)跟踪时间为一个输入信号周期;(2)输出信号和输入信号同步;(3)倍频系数可由程序进行设置等。由于在这种倍频器中使用了校正补偿电路,使其输出信号的相对误差与倍频系数无关。文中对新型数字倍频器的设计思路及实现方法作了较详细介绍,解释了有时会丢掉最后一个输出脉冲的原因,且提出了相应的解决方法。同时,对这一新型数字倍频器进行了相应的实验验证。
This article describes a new type of digital frequency multiplier that has many different characteristics from existing multipliers. Its characteristics are: (1) tracking time for an input signal cycle; (2) the output signal and the input signal synchronization; (3) multiplier coefficient can be set by the program. Due to the use of this frequency multiplier correction compensation circuit, the relative error of the output signal has nothing to do with the multiplier. In this paper, the design ideas and implementation methods of the new digital multiplier are introduced in detail. The reason why the last output pulse is sometimes lost is explained and the corresponding solutions are proposed. At the same time, the new type of digital frequency multiplier carried out the corresponding experimental verification.