+ Post New Thread
Results 1 to 2 of 2
  1. #1
    Full Member level 1
    Points: 1,767, Level: 9
    Achievements:
    Created Blog entry 7 years registered

    Join Date
    Oct 2010
    Posts
    116
    Helped
    0 / 0
    Points
    1,767
    Level
    9

    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

    •   Alt24th February 2014, 13:41

      advertising

        
       

  2. #2
    Advanced Member level 3
    Points: 9,034, Level: 22
    rfsystem's Avatar
    Join Date
    Feb 2002
    Location
    Germany
    Posts
    914
    Helped
    146 / 146
    Points
    9,034
    Level
    22

    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.



--[[ ]]--