Accession Number : ADD014334

Title :   Temperature Compensated Crystal Oscillator (TCXO) with Improved Temperature Compensation.

Descriptive Note : Patent application, Filed 4 Oct 89,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Kosinski, John A

Report Date : 04 Oct 1989

Pagination or Media Count : 11

Abstract : 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 K/(1-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)

Descriptors :   *CRYSTAL OSCILLATORS, *PATENT APPLICATIONS, *PIEZOELECTRIC EFFECT, *TEMPERATURE CONTROL, CAPACITANCE, CAPACITORS, COMPENSATION, COUPLING CIRCUITS, LOADS(FORCES), RESONATORS, SENSITIVITY, STATICS, TEMPERATURE COEFFICIENTS

Subject Categories : Electrical and Electronic Equipment
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE