Title:
同軸ケーブル
Document Type and Number:
Japanese Patent JP5421565
Kind Code:
B2
Abstract:
A coaxial cable and a multicoaxial cable, in which permittivity is made low by ensuring a proportion of void portions to an insulator and in which sufficient strength is obtained, are provided. In a coaxial cable 11 in which a central conductor 12 is covered with an insulator 13 having void portions 14 continuing in a longitudinal direction, and an outer conductor 15 is arranged on an outer circumference of the insulator 13, each of the void portions 14 is formed to have a circular or elliptical cross section, the void portions 14 are evenly arranged in the insulator 13 in a set of six to nine. In a cross section perpendicular to the longitudinal direction of the coaxial cable, a void ratio of the entire void portions is 43 % or more, the void ratio being a proportion of the void portions to a sum of a total area of all the void portions 14 and an area of the insulator 13. Further, a multicoaxial cable may be provided by incorporating a plurality of the coaxial cables 11 described above.
Inventors:
Tatsunori Hayashita
Hirokazu Takahashi
Hirokazu Takahashi
Application Number:
JP2008244033A
Publication Date:
February 19, 2014
Filing Date:
September 24, 2008
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
H01B11/18; H01B7/02; H01B11/20
Domestic Patent References:
| JP200712383A | ||||
| JP2008103179A | ||||
| JP2001160325A | ||||
| JP2004119060A |
Attorney, Agent or Firm:
Masahiro Takashiro