| 摘要 |
PURPOSE:To make symmetricalness of an electric characteristic satisfactory, by providing a notch or a through-hole for positioning, on the part which is not connected to a shielding plate of the center electric conductor. CONSTITUTION:3 center electric conductors which have been insulated to each other are placed between 2 ferrimagnetic substances. Also, the whole or a part of this magnetic substance is covered with a shielding plate, and each one terminal of the center electric conductor is connected to the shielding plate. On such a lumped constant type circulator, a through-hole 4 for positioning is provided on each center electric conductor 1. As for the number of through-holes 4, 2 or more can be used. Also, a notch 5 for positioning is provided. According to such a constitution, the center electric conductor 1 can be positioned easily, and symmetricalness of the electric characteristic becomes satisfactory. |
