Phase matching denotes two or more cable assemblies with the same phase length, or electrical length. Phase matching can be absolute, as compared to a predetermined value, or relative, where the assemblies are matched to each other. The physical lengths of cable assemblies may differ due to slight variations within cable stock and connectors. The tolerance of phase matching is frequency dependent, although cable length and type may affect the matching capabilities. Due to the inherent variations in cable and connector manufacturing and assembly, phase matching can be more an art than technology, and may involve a good amount of “tweaking.” Phase matching increases labor time, and thus cost.
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