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- 2018
基于零相位频率的晶体谐振器等效电参数测量方法
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Abstract:
晶体谐振器等效参数的测量方法很多，工程上通常利用谐振频率和负载谐振频率来求解等效参数。该文推导了谐振频率、负载谐振频率、反谐振频率和负载反谐振频率的精确形式，并以此为基础求解晶体谐振器的等效参数。ADS仿真实验表明，该方法在理论上正确。利用相位-频率曲线在谐振点与反谐振点的导数构建非线性方程组，解决实测实验中的频率随机游动问题。采用二维搜索法求解非线性方程组。实测结果表明，该方法测量的等效参数和供应商提供的等效参数基本一致。该方法没有采用近似计算，不仅适用于高Q值晶体谐振器，也适用于低Q值谐振器，因此，该方法也能应用于传感器领域，如温度传感器、石英晶体微天平等。
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