WIRING AND COMPOSITE WIRING

摘要

A wire (a twist pair cable) (10), which transmits a gigahertz band signal, is provided with a pair of cores (11) that are twisted with each other, a first insulation coating material (12), a second insulation coating material (13), and a sealing material (14) that confines an evanescent wave radiated from the pair of the cores (11). The pair of the cores (11) is so set to have a twisting pitch, a diameter and an interval that a characteristic impedance of the wire (10) is ranged from 100O to 200O and phases of a TEM wave and the evanescent wave radiated from the pair of the cores are matched with each other.