| 摘要 |
<p>A radiating cable (10) comprises a core having a center conductor (12) bonded to, centered in, and supported by discs (16) of dielectric material. A sleeve (18) of dielectric material is extruded over the discs and thereby bonded thereto to form a plurality of sealed, coaxial, dielectric chambers (20). A tubular outer conductor (14) is bonded in concentric relation to the sleeve (18). In a continuous process, at least one slot (24) is formed in the outer conductor (14) by a cutting operation and an outer jacket (38) is extruded over the outer conductor (14). In a preferred embodiment, the outer conductor (14) is made of an aluminum tube and two circumferentially equally spaced slots (24) are formed therein by removing between 10 and 35 % of the aluminum material. The width of the resulting slots (24) may be configured so that a joint is formed in the slot between the insulating sleeve (18) and the outer jacket (38), thus obviating the use of adhesive in bonding the outer jacket (38) to the cable (10).</p> |
