DESIGN AND ANALYSIS OF ANALOG FILTERS A Signal ...

34 DESIGN AND ANALYSIS OF ANALOG FILTERS:
from which “raised cosine” gets it's name. Note from Figure 2.14, that when
the impulse response dies out, at least practically, much more rapidly than it does for
Note from (2.10), that the term,
multiplies the sinc function which is independent of Therefore, it is the
dependent term that causes the impulse response to die out more rapidly when
2.2 THE PALEY-WIENER THEOREM
The Paley-Wiener Theorem is a fundamental theorem concerning the
realizability of an analog filter transfer function. In considering ideal filters in the last
section, the fact that they are inherently non-causal makes them non-realizable; the
Chapter 2 Analog Filter Design and Analysis Concepts