A one-port SAW resonator(SAWR) humidity measurement system is reported which is based on the modified Pierce oscillator working at 433.
本文介绍了一种基于改进皮尔斯振荡器,中心频率为433。
The importance of the loaded Q are analyzed on the basis of phase noise equation of Leeson model in feedback oscillator,the formula of loaded Q is derived by the analysis of Pierce oscillator circuit,and we can draw a conclusion that the larger C1 is,the higher loaded Q becomes.
从反馈振荡器的Leeson模型相位噪声表达式出发,分析了有载Q的重要性,针对基本皮尔斯振荡电路推导出有载Q的表达式,得到C1越大,有载Q越高的结论。