Coaxial cable having effective insulated conductor

专利名称：Coaxial cable having effective insulated

conductor rotation

发明人：Douglas R. Brake,Philip Nelson

Gardner,Trent M. Hayes,Paul G.

Koehler,Dean J. Schwery,Stephen TaylorZerbs

申请号：US09272514申请日：19990319公开号：US06288328B1公开日：20010911

专利附图：

摘要：A coaxial cable [] includes an inner conductor [] that is separated from an outerconductor [] by a layer of insulating material []. The outer conductor includes a thin sheetof metallic foil that envelops the insulating material and has a seam [] that extends in thelongitudinal direction of the cable. In a first embodiment, the insulated conductor isaxially rotated (twisted) with respect to its own longitudinal axis. In a second

embodiment, the outer conductor is wrapped around the layer of insulating material. Inboth embodiments, there is relative rotation between the insulated conductor and theouter conductor. This practice is referred to as relative insulated conductor rotation, andit significantly improves the structural return loss characteristics of a coaxial cable whenthe outer conductor includes an asymmetry, such as a seam, that extends in thelongitudinal direction of the cable. A braided-wire shield [] is positioned between theouter conductor and a plastic jacket [], which provides environmental protection for thecable.

申请人：AVAYA TECHNOLOGY CORP.

代理人：Michael A. Morra,Thomas J. Bean

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