| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the dielectric waveguide line that is used for a high frequency transmission line for a multi-layer wiring board and a semiconductor package in which a conductor loss and a dielectric loss are reduced. SOLUTION: The line is made up of a dielectric base 1 consisting of a laminator of pluralities of dielectric layers, a 1st conductor layer 2 and a 2nd conductor layer 3 formed to upper and lower sides of the dielectric base 1 at least in a direction of line, and side wall via-hole conductors 4 that connect electrically the conductor layers 2, 3 in the dielectric base 1 and are placed in two lines at an interval below a half of a cut wavelength in a direction of line. In this case, a destination constant of a dielectric layer 1b placed in the middle of the dielectric base 1 is selected higher than that of dielectric layers 1a, 1c placed at the 1st conductor layer and the 2nd conductor layer.</p> |
