晶体稳频、用高次谐波产生输出信号的频率综合器,其电路性能的好坏主要决定于振荡器的边带及噪声。图1所示的振荡器电路,与一般设计的稍有不同。此电路在保证晶振通常稳定度的情况下,产生高频谱纯度的输出。尽管一般晶振具有高品质因数Q,但仍有噪声,而且产生许多寄生信号。这主要是电 Crystal frequency stabilization, with the higher harmonic output signal frequency synthesizer, the circuit performance is good or bad depends on the oscillator sideband and noise. The oscillator circuit shown in Figure 1 is slightly different from the general design. This circuit produces high spectral purity output with guaranteed crystal stability. Although a typical crystal oscillator has a high quality factor Q, it is still noisy and generates many parasitic signals. This is mainly electricity