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有用，但并不是普遍规律。关键区别在于“端口数”和“模式数”不同。天线端口是读取和控制电磁场的接口，真正承载信息的则是电磁场中的独立模式。如果孔径大小、工作频率和传播环境都没有改变，继续增加阵元，往往只是把同一片电磁场采得更细，而不是产生新的独立模式。