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数字中频所谓中频,顾名思义,是指一种中间频率的信号形式。中频是相对于基带信号和射频信号来讲的,中频可以有一级或多级,它是基带和射频之间过渡的桥梁。
Digital IF The so-called IF, as its name suggests, refers to a form of intermediate frequency signal. The IF is relative to the baseband signal and the RF signal. The IF can be one or more stages. It is the bridge between baseband and RF.