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| Submitted by A. C. Ant&as There are two ways to introduce the notion of frequency response for sampled-data systems. One is based on the so-called lifting, and the other based on an interpretation of steady-state response in terms of impulse modulation. This paper proves the equivalence of these two notions; in particular, it establishes a more direct link of the second approach to the H ” norm, and also provides the first approach with a natural interpretation of steady-state response as an infinite sum of sinusoidal signals. This study also leads to a comprehensive account of impulse modulation from the lifting viewpoint. | |||||||||||||||
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