Twin-axial cable with novel structure and method for testing intra-pair transmission skew
A technology of parallel double conductors and a new structure, applied in the direction of applying a stable bending force to test the strength of the material, applying a repetitive force/pulse force to test the strength of the material, waveguide, etc. Line pair differential impedance deviation, dielectric constant difference and other issues, to achieve the effect of simplifying the on-site installation process, small delay difference between pairs, and low impedance attenuation
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[0033] Example 1: Such as figure 1 , figure 2 Shown: a new structure of parallel two-conductor cable, including wire pair 1, sheath layer 2, wire pair 1 includes two conductive core wires 3, conductive core wire 3 includes an inner conductor 3.1 and an insulating layer outside the inner conductor 3.1 3.2, the insulation layer 3.2 of each conductor core wire 3 is provided with a shielding layer. The shielding layer includes inner and outer shielding layers (4.1, 4.2). The inner shielding layer 4.1 is a metal composite tape composed of polyester (PET) on the inside and copper foil on the outside, and the outer shielding layer 4.2 is a metal wire braided layer. The metal composite tape of the inner shielding layer 4.1 is spirally wrapped or longitudinally wrapped on a single conductive core wire, the metal composite tape wrapping overlap rate is not less than 40% or the longitudinal wrapping overlap rate is not less than 15%, the outer shielding layer 4.2 The density of the met...
Example Embodiment
[0034] Embodiment 2: With reference to Embodiment 1, a drain wire 5 is provided in the gap between the wire pairs 1, and a wire pair shield 6 is provided on the outside of the wire, so the setting is cancelled.
[0035] The wire is longitudinally wrapped with a layer of single-sided metal composite tape, the metal is facing inward, and the longitudinal wrapping overlap rate is not less than 25%; two layers of single-sided metal composite foils are wrapped spirally on the insulating core wire in opposite directions, and the inner layer of metal The metal surface of the composite foil faces outward, and the metal surface of the outer metal composite foil faces inward. The overlap rate of each layer is not less than 20%, which can be completed on one equipment.
[0036] The so-called vertical wrap or wrap-around overlap rate here refers to the ratio of the overlapped width of the metal composite tape to its total width. The definition is the test method and the definition of the weave ...
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