Patent ID: 6403887
Filing Date: 2002-06-11
Classification: H01B

Abstract:
A high speed data transmission cable comprising:a pair of primary cables positioned adjacent to each other along their lengths; each primary cable including a pair of generally parallel conductors which are coupled together by an insulation structure; the insulation structure having a cross-section including circular end portions wherein each end portion is defined by a center point and a radius dimension, the conductors positioned proximate the center points of the circular end portions; the circular end portions being coupled together by a center portion, the center portion having cross-sectional height dimension reflective of the radius dimension of the end portions such that the insulation structure cross-section has generally flat top and bottom surfaces; a shield layer surrounding each primary cable along its length to isolate the primary cables from each other; the primary cables and corresponding shield layers being twisted together around a center axis located between the primary cables and forming a double helical structure; thereby providing improved transmission characteristics in the high speed data transmission cable.