15问答网 > 输入信号本振信号中频的频率之间有什么关系

输入信号本振信号中频的频率之间有什么关系

2025-04-07 02:55:13
推荐回答（3个）
回答1：

它们之间的关系为：中频信号的频率=本振信号的频率±输入信号的频率。

回答2：

不是越强越好，够用就行，它对接收和发射信号没有放大作用。本振越强，屏蔽不好对外辐射越强，就会干扰其它设备工作，对本机同样会产生干扰。

回答3：

中频=射频-本振

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