A Frequency-Domain Interpretation of Echoes and their Effect on Teletext Data Reception


The interpretation of echoes in terms of ripples in the amplitude and group delay of a system is analyzed and discussed. Simple relationships are given, valid for most practical purposes for echo levels up to at least 10-20 percent. Scre general applications are considered, including determination of SAW filter triple transit frcm group delay ripple rate… (More)


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