Temperature Compensated Crystal Oscillator (TCXO) with Improved Temperature Compensation.
Patent application, Filed 4 Oct 89,
DEPARTMENT OF THE ARMY WASHINGTON DC
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A TCXO including a series capacitance is improved by having the temperature sensitivity of the series load capacitance be chosen in accordance with the formula T sub CL T sub Co 2 T sub K1-alpha sub 0 wherein TCL is the temperature coefficient of the series load capacitor, T sub Co is the temperature coefficient of the resonator static capacitance, TK is the temperature coefficient of the piezoelectric coupling for the resonator, and alpha sub 0 is the center value of load factor alpha wherein the load factor, alpha, is defined as alpha sub Co sub Co sub CL wherein sub Co is the resonator static capacitance and sub CL is the series load capacitance. Patent applications. jhd
- Electrical and Electronic Equipment