介绍了锁相环的基本原理和锁相环ne564的电路结构和性能，及其用ne564构成的锁相解调电路和锁相倍频电路。
Introduces the basic principle of phase-locked loop and NE564 PLL circuit structure and properties, and the use of phase-locked NE564 demodulating circuit and phase-locked frequency circuit.
介绍了锁相环的基本原理，分析了锁相环各部分电路相位噪声的传递函数。
The basic principle of phase locked loop (PLL) has been introduced, and the transmission function of the phase noises of every part of PLL has been analyzed.
随后，本文详细讨论了并网过程中的软件锁相环技术，对锁相环电路的组成、工作原理进行了研究。
Subsequently, the detailed discussion of the software phase-locked loop technology and network process, the composition of the phase-locked loop circuit, the working principle of the study.
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