| 摘要 |
PURPOSE: A switching distributor having an impedance matching line in accordance with the number of distributed paths is provided to use a pin diode switch circuit with an SPST(Single Pole Double Throw) structure, and to have the impedance in accordance with the number of distributed paths, so as to perform a perfect impedance matching as reducing a system cost. CONSTITUTION: An input port inputs a signal. An impedance matching line transmits a signal of 1 path 1. An impedance matcher 1 for 2 paths and an impedance matcher 2 for 3 paths(22,24) are selectively connected according to the number of distributed paths. The first to the second switches(23,25) select the impedance matcher 1(22) or the impedance matcher 2(24) to connect with. The third to the fifth switches select a distributed path to connect with. A line 1(26) transmits a distributed signal. Output port 1 to output port 3(Po1,Po2,Po3) output the distributed signal. An isolation resistor(27) increases signal separation between the output ports(Po1,Po2,Po3). A line 2(28) configures a common contact. The sixth to the eighth switches interact with the third to the fifth switches on the same paths, to select a distributed path to connect.
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