| 摘要 |
<p>PURPOSE:To achieve an excellent transmission characteristics for electric communication, by providing electric good conductors which constitute pairs opposingly with each other, on the upper and lower surfaces of strip shaped dielectric substances made of oriented and porous plytetrafluoroethylene and coating the insulating layer made of nonporous plastic. CONSTITUTION:A strip shaped dielectric substance 1 made of oriented and porous polytetrafluoroethylene PTFE is provided. Further, a plurality of electric good conductors 2 shown in two pair of conductors 2a, 2a'; 2b, 2b'; 2c, 2c'; 2d, 2d' and 2e, 2e' which are opposed with each other by clipping the dielectric substance 1 and in parallel, are provided in the lengthwise direction. Moreover, insulating layers 3, 3' made of nonporous plastic material are coated on both the sides of the good conductors 2. Thus, the excellent electric communication transmitting characteristics is achieved by using the oriented and porous PTFE with less dielectric conduction and dielectric loss, and the crosstalk between layers and between lines with the adjacent strips can be reduced.</p> |
