该装置在总馈电开关处的漏电保护装置使用附加直流电源原理，在分支馈电开关处的漏电保护装置使用零序功率方向式保护原理。
This device use the principle of additional DC power supply in main feeding switch, and use the principle of direction of zero sequence power in branch feeding switch.
每一分支都有单独的微带一垂直探针馈电系统，并在分支上蚀刻有一个细槽以提高两个端口的隔离度。
Each of the crossed branches has an exclusive microstrip vertical via feed system. To further increase the isolation between the two ports, a slot is etched on each of the crossed branches.
每一分支都有单独的微带一垂直探针馈电系统，并在分支上蚀刻有一个细槽以提高两个端口的隔离度。
Each of the crossed branches has an exclusive microstrip vertical via feed system. To further increase the isolation between the two ports, a slot is etched on each of the crossed branches.
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