| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thin coaxial cable which has an excellent and stable high frequency property. <P>SOLUTION: The coaxial cable 10 comprises a center conductor 12, an insulating coating layer 14, a shield conductor 16, and a protection coating layer 18. The center conductor 12 is constructed of a stranded wire (copper wire) of circular cross section. The coating layer 14 is formed so as to cover the outer circumference of the conductor 12 and has an annular portion 20 to cover the outer circumference of the conductor 12 and three column-shape portions 22 extending radially from the annular portion 20a to the outside diameter direction. The shield conductor 16 is formed of a hollow shape compression stranded wire. The compression stranded wire is formed in hollow-shape by arranging a plurality of element wires 26 of circular cross-section on the identical circumference and by stranding each element wire 26 in one direction and passing a crimping die. At this time, the element wires 26 are, at each part of the outer periphery mutually contacting, plastic deformed and stranded, thereby, become a stable structure (arch structure) which is tightly contacted in stone wall shape, and its shape is maintained without collapsing. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
