| 摘要 |
PURPOSE:To perform the operation of a short stub without short-circuit in DC and to easily enable the change of susceptance value, by short-circuiting the end at opposite side of the main transmission line of coupled parallel lines connected to the main transmission line. CONSTITUTION:Main transmission lines 3-4 and 3'-4' are connected in series, and transmission lines 11-14 and 11-14' are connected to the connection points 8, 9. The transmission lines 11-14, 11-14' are located with separation, and when they are connected at the separate part, the electric length is equal to the transmission line 11-13, and the coupled parallel lines are formed with parallel location with the transmission line 11-13. With both transmission lines 11-14, 11-14' connected, when they are viewed from the connecting points 8 and 9, they are operated as a short stub in lambda/8 and opened in DC state. Further, when both transmission lines are not connected, the susceptance viewed from the connecting points 8 and 9 is different from the state of connection. |
