In Figure P6.52 (a), we show the magnitude of the frequency response for an ideal continuous-time differentiator. A nonideal differentiator would have a frequency response that is some approximation to the frequency response in the figure.
(a) Consider a nonideal differentiator with frequency response G(jω) for which is constrained to be within -±10% of the magnitude of the frequency response of the ideal differentiator at all frequencies; that is,
must be confined to meet this specification.
(b) The system in Figure P6.52(b), incorporating an ideal delay of T seconds, is sometimes used to approximate a continuous-time differentiator. For T = 10-2 second, determine the frequency range over which the magnitude of the frequency response of the system in the figure is within ±10% of that for an ideal differentiator.
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