| 摘要 |
<P>PROBLEM TO BE SOLVED: To acquire a high-frequency transmission line which reduces unwanted emission as well as improving transmission characteristic degradation attributable to discontinuity. <P>SOLUTION: The high-frequency transmission line is equipped with a dielectric substrate 110, a first grounding conductor 117 having a first bored portion, a second grounding conductor 111 having a second bored portion, a first signal line conductor pattern 112 which is inside the second bored portion and is not electrically connected with the second grounding conductor, a plurality of grounding columnar conductors 116a which are apposed in the vicinity of revolving portions of the first and second bored portions and connect the first and second grounding conductors, a strip conductor 115 which has its own end near the first bored portion and extends in one direction, and a first signal line columnar conductor 113a which connects the strip conductor and the first signal line conductor pattern. Then, a distance to the same direction as an extending direction of the strip conductor 115 from the first signal line columnar conductor to the revolving portion of the first bored portion is shorter than a distance to an opposite direction to the extending direction of the strip conductor from the first signal line columnar conductor to the revolving portion of the first bored portion. <P>COPYRIGHT: (C)2009,JPO&INPIT |
