Finding the Maximum and Minimum Magnitude Responses (Gains) of Third-Order Filters without Calculus
نویسندگان
چکیده
The maximum and minimum gains (with respect to frequency) of third-order low-pass and high-pass filters are derived without using calculus. Our method uses the little known fact that extrema of cubic functions can easily be found by purely algebraic means. PSpice simulations are provided that verify the theoretical results.
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