| 摘要 |
A high frequency transmission line structure has a reference potential plane conductor layer, a plurality of strip line conductors, a dielectric material layer interposed between the reference potential plane conductor layer and the strip line conductors and a shielding conductor unit provided between adjacent two strip line conductors. The shielding conductor unit includes first and second slender conductor portions extending substantially in a direction parallel with a lengthwise direction of the strip line conductors and connected to be integral with each other at their first ends. The second ends of the first and second slender conductor portions being electrically connected with the reference potential plane conductor layer.
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