锁相环路系统的基本概念早在三十年代已经理解,现已广泛用于测试设备和空间遥测。但由于单个(非集成的)系统设计的成本和复杂性,对用于需要高抗干扰度和带宽很窄的精密测量,它的应用受到了限制。随着集成电路设计和处理技术的不断发展,很快就改变了这种状况。目前,单片锁相环路已成为一种新的多用途积木块,类似于不同 The basic concept of a phase-locked loop system, as already understood in the thirties, is now widely used in test equipment and space telemetry. However, due to the cost and complexity of a single (non-integrated) system design, its use is limited for precision measurements that require high levels of interference immunity and narrow bandwidth. With the continuous development of integrated circuit design and processing technology, this situation was quickly changed. At present, the monolithic phase-locked loop has become a new multi-purpose building blocks, similar to the different