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What does "Zero-IF" mean ?

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What does "Zero-IF" mean which is usually seen in the tuner designs?
 

Re: Zero-IF ?

zero if is the process of homodyning... here we bring the signal to its baseband directly without the usage of a intermediate frequency...
 

Re: Zero-IF ?

This requires two mixers with their LO signals at 90 degrees apart. This method is commonly done when DSP is used to demodulate the signal.
 

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