This type of matrix requires a power divider at each input and a multiposition switch at the outputs.
这种类型的矩阵需要在每路输入处安装一个功率分配器，以及在输出处安装一个多触点开关。
Power divider
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Power dividers and directional couplers
（重定向自Power divider）
Power dividers (also power splitters and, when used in reverse, power combiners) and directional couplers are passive devices used in the field of radio technology. They couple a defined amount of the electromagnetic power in a transmission line to a port enabling the signal to be used in another circuit. An essential feature of directional couplers is that they only couple power flowing in one direction. Power entering the output port is coupled to the isolated port but not to the coupled port.
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