ADS的momentum仿真问题

设置port为ground reference时要求填上它associated with某一个端口，如果想对应多个端口怎么办呢?
这是帮助手册上的设置流程。我就是不知道Associate with port number 能不能不止一个
“To add a ground reference:

• Choose Momentum > Ports > Editor.
• Select the port that you want to assign as the ground reference.
• In the Port Editor dialog box, under Port Type, select Ground Reference .
• Under Associate with port number , enter the number of the single or internal port that you want to associate with this ground reference. Make sure that the distance between the port and ground reference is electrically small.
• Click Apply . ”

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