Title:
COMPOSITE CABLE
Document Type and Number:
WIPO Patent Application WO/2016/084112
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a small (narrow-gauge) composite cable in which it is possible to reduce impedance of a power line in a high-frequency region, and to reduce noise in a signal line. This composite cable 1 comprises: a signal line unit 11U in which a plurality of signal lines is twisted together; a first shield layer 13 which is formed in the circumference of the signal line unit 11U; a power line unit 14U in which even-numbered power lines are positioned twisted together in the circumference of the first shield layer 13 so as to form concentric circles in cross-section; and a second shield layer 16 which is formed in the circumference of the power line unit 14U. Electric current flows alternately in inverse directions in the even-numbered power lines. The ratio d1/d2 of the outer diameter d1 of the signal line unit 11U to the outer diameter d2 of the power line is 1.6-3.0. The twist pitch of the signal line unit 11U is 25-35 times the layer core diameter. The twist pitch of the power line unit 14U is 25-35 times the layer core diameter.
Inventors:
MIURA KIYOSHI
MORI TOSHIAKI
SAKAGAMI YOSHIHIRO
NAKATSU TERUHITO
MORI TOSHIAKI
SAKAGAMI YOSHIHIRO
NAKATSU TERUHITO
Application Number:
PCT/JP2014/005889
Publication Date:
June 02, 2016
Filing Date:
November 25, 2014
Export Citation:
Assignee:
SWCC SHOWA CABLE SYS CO LTD (JP)
International Classes:
H01B7/00
Foreign References:
JP2002313144A | 2002-10-25 | |||
JP2005510839A | 2005-04-21 |
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
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