基于锁相环的高稳定高频正弦信号发生器

A High Frequency Sine Wave Signal Generator with High Stability Based on Phaselocked Loop

介绍一种基于锁相环的高稳定高频正弦信号发生器,该发生器用差分对管LC谐振电路产生正弦波,利用单片机控制的PLL锁相环电路合成频率,实验结果表明,所设计的信号发生器的频率稳定度达到10-6,调节频率范围5MHz～70MHz.

This paper introduces a high frequency sine wave signal generator with high stability Based on Phaselocked Loop. By using LC resonance circuit of differential pair transistor, the generator can produce sine signal waves. Its frequency is synthesized by phaselocked loop controlled by singlechip. The experimental result indicates its frequence degree of stability is 10+{-6} and the range of adjustable frequence is 5 MHz^70 MHz.