一种频标变换的方法

对基准频率进行变换通常采用锁相环路或频率搬移电路，前者作为一个环路电路肯定复杂，调试难度增加，后者由于需要混频器或乘法器也存在类似问题．该文介绍的基准频率变换方法实质上是一种频率搬移法。采用MOTOROLA公司生产的MC14011、CMOS与门非电路及模块化晶体带通滤波器可使电路大大简化．调试十分方便。实验结果表明，具有工作可靠、稳定度高、体积小等特点。文中还讨论了工作原理和设计要点。

The Method for a Signal Conversion Circuit with Reference Frequency

In order to realize reference frequency coversion, phaselock loop and frequence transfer circuit are often used. The former is complicated and difficult to adjust. The latter has the same problem because of the existance of mixer and multiplier. In this paper, a method of reference frequency coversion is introduced. Actually, it is a kind of reference frequency transfer method. But since MCl4011 (made by Motorol a Companty), CMOS and not gate and crystal band pass filter are used in circuit, the circuit is simple and easy to adjust. The experiment results proved that it has such good features as high reliability, high accuracy, high stability, simple circuit and so on. The working principle and designing main points are mainly discussed in this paper.