Electrical Engineering Glossary Definition for IF

Definition

中频：无线通信系统用基带信号调制载波频率，以便实现无线传输。多数情况下，不是直接调制到载波，而是调制到较低频率的IF并进行处理。在后级电路，IF信号再被转换到发送频段。

Synonyms

• 中频

See Also

• 镜像抑制
• 超外差接收机
• 镜像频率
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