| 摘要 |
The band-pass filter portion of a coaxial cable includes filter elements (16;20) in the form of a laminate (34;44) of dielectric material having a conductive layer (36,38;46,48) on opposite faces. Attached to each conductive layer is a mass (40,42;50,52) which is the electrical equivalent of a shunt capacitor. Each such mass is joined to a centre conductor (17,18,22). A sleeve of dielectric material surrounds each centre conductor except in the area of the filter. A seamless tube (30) of dielectric material surrounds the filter elements and the dielectric sleeves. A monolithic jacket (32) of electrically conductive metal surrounds said seamless tube (30). <IMAGE> |
