Electrical Engineering Glossary Definition for IF

Definition

Intermediate Frequency: Radio communications systems modulate a carrier frequency with a baseband signal in order to achieve radio transmission. In many cases, the carrier is not modulated directly. Instead, a lower IF signal is modulated and processed. At a later circuit stage, the IF signal is converted up to the transmission frequency band.

Synonyms

• Intermediate Frequency

See Also

• Image Rejection
• Superheterodyne Receiver
• Image Frequency
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