| 摘要 |
PROBLEM TO BE SOLVED: To enable introduction of one signal from two RF signals into a slab line transmission line structure, while maintaining high insulation. SOLUTION: There are provided three switches. A pair of input switches S1 and S2 are connected to corresponding input ports P1 and P2, respectively. A transition switch S3 is connected to the output port through the slab line transmission line 52. The input switches S1 and S2 select the input port to be connected to the transition switch S3. The transition switch S3 connects the input port which was selected with the input switches to the output port. A ground conductor 42 is arranged between input ports P1 and P2 in a hollow of a cabinet 11. A high-insulation RF switch 12 is arranged in the hollow of the cabinet 11 so that the part between the input ports is insulated. Furthermore, by making a non-selective input terminal or a non-selective input port of the transition switch grounded, a non-selective RF input signal is grounded, and insulation between the input ports is further enhanced. COPYRIGHT: (C)2006,JPO&NCIPI
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