| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high frequency transmission line capable of easily adjusting insertion loss of the transmission line to a desired level. <P>SOLUTION: On a position substantially right above a signal line layer, a part of a ground layer is selectively removed at a spacing of λ/4 to form a depression portion. A radio wave absorber is stuck on the depression portion. <P>COPYRIGHT: (C)2009,JPO&INPIT |
