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Erschienen in:
2016 | OriginalPaper | Buchkapitel
7. Lossy Transmission Lines
verfasst von : Samuel H. Russ
Erschienen in: Signal Integrity
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Abstract
In Chap. 6, the concepts of a transmission line, reflections, and terminations were unveiled. Transmission lines have the very desirable property that they carry signals nearly completely intact, and that is why they are widely used. However, if you go all the way back to the beginning of the chapter, one assumption was made: that, in a coaxial cable or on a twisted-pair cable, there is no loss of signal energy. This turns out to be false, but the source of the loss is surprising. This chapter discusses dielectric loss, explains how it manifests itself, and explains how it affects signals on real circuit boards.