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  1. #1
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    Why most of RFIC use Zero IF Rx and not Real IF

    Is it due to cost? but why Zero IF is cheaper? why Real IF can't be RFIC
    or maybe i don't get something?
    Thanks
    &
    BR
    A.N

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  2. #2
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    Re: Why most of RFIC use Zero IF Rx and not Real IF

    There are two reasons:

    1. For Real IF or High IF the image frequency have tigther rejection requirements for most systems. So you need additional filtering in RF

    2. The integrated channel filter operate at much lower frequency for Zero IF. Otherwise it must use also an external IF filter.

    So both are finally cost/space arguments.



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