高频课程设计---石英晶体振荡器

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1、 I 摘要 石英晶体具有正反压电效应。当晶体几何尺寸和结构一定时，它本身有 一个固有的机械振动频率。当外加交流电压的频率等于晶体的固有频率时， 晶体片的机械振动最大，晶体表面电荷量最多，外电路中的交流电流最强， 于是产生了谐振。 本设计对利用石英晶体构成正弦波的振荡器的方法做了较深入的研 究， 对振荡器的原 理及石英晶体 振荡器原理 做了详细的介 绍并通过 Multisim 软件设计、仿真出串并联可交换的石英晶体振荡器，最后按照原 理图进行实物的连接、调试和参数的计算。 关键词：石英晶体；振荡器；Multisim 仿真 ABSTRACT Quartz crystal oscillator is

2、 a high precision and high stability of the oscillator, is widely used in color television sets, computers, remote controls and other kinds of oscillator circuits, and communications systems for the frequency generator, generate the clock for the data-processing equipment signal and reference signal

3、s for a particular system. Quartz resonators for very high frequency stability, it is mainly used in the required oscillation frequency is very stable as resonant circuit elements such as color TV color subcarrier oscillator, electronic watches and games when the base of the clock oscillator pulse o

4、scillators. This design constitutes a sine wave on the use of quartz crystal oscillator method to do a more in-depth research on the oscillator principle and principle of quartz crystal oscillators made a detailed introduction and adoption of Multisim software design, simulation a commutative series-parallel quartz crystal oscillator, and finally in accordance with the schematic diagram for physical connections, debugging and parameter calculation. Keywords：Crystal；Oscillator；Multisim Simulatio