Analysis of Two Low Q Active Filter Circuits.
Final analysis rept.,
NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD
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Circuit equations for a sensitivity analysis of two active filter circuits are derived using a single pole model of the op amp. A BASIC computer program is used to calculate the sensitivities of center frequency, Q, and gain to variations in each component value and op amp parameter. The computer program also multiplies the sensitivities by the temperature coefficients of the circuit components and op amp parameters to indicate the relative amounts of temperature drift in filter characteristics that are caused by each component. A second method for determining drifts in filter parameters with temperature is also described this approach makes use of a network analysis program to plot the temperature shifted transfer function of each filter based on component drifts in the worst case directions determined by the signs of the sensitivities. Both of these techniques are used to compare the temperature stabilities of four active filters related to the Gamma Detector of the Mk 48 Mod 1 Torpedo. Author
- Electrical and Electronic Equipment