Feb 24, 2014 #1 L levnu Full Member level 2 Joined Oct 29, 2010 Messages 149 Helped 0 Reputation 0 Reaction score 1 Trophy points 1,298 Location Israel Activity points 2,501 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?
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?
Mar 20, 2014 #2 rfsystem Advanced Member level 3 Joined Feb 25, 2002 Messages 908 Helped 149 Reputation 294 Reaction score 38 Trophy points 1,308 Location Germany Activity points 9,548 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.
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.