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Printable version; Page information; Get shortened URL; ... English: A cutaway diagram of a coaxial cable. Date: 1 January 2012, 04:44 (UTC) Source: Coaxial_cable ...
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Coaxial cable, or coax (pronounced / ˈ k oʊ. æ k s /), is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket.
Current in the inner conductor is flowing into the page. Current in the outer conductor is flowing out of the page. No electric field exists inside the conductors, so the Poynting vector in the gray areas is zero. The magnetic fields of inner and outer conductors cancel outside of the cable, so the Poynting vector outside the cable is also zero.
English: Diagram of a hybrid fiber coaxial (HFC) network, the type of technology used in modern cable television networks. The cable signal originates at a regional headend , where many television channels are transmitted on an optical fiber cable, which is carried on utility poles or underground.
By holding the conductors a known distance apart, the geometry is fixed and the line characteristics are reliably consistent. It is lower loss than coaxial cable because the characteristic impedance of twin-lead is generally higher than coaxial cable, leading to lower resistive losses due to the reduced current.
Generally use coaxial cable types such as RG-6 and RG-59 (except for twin-lead). Belling-Lee/IEC 169-2 connector TV aerial plug (a.k.a. antenna plug) Television antenna connection for most video devices outside North America. Used by early home computers and game consoles to connect them to TVs because of the lack of any other connector.