Aug 31, 2010 #1 V visionbjp Newbie level 5 Joined Jun 26, 2010 Messages 10 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Korea,ROK Activity points 1,358 Hello I am currently working on current mode RF receiver front-end question is do I need to conjugate match between two blocks(eg LNA - mixer) normally for current mode, input impedance should be very small and output very large. Do I need interstage match??(Rout=Rin)? antenna(50ohm) - (50ohm)LNA( ?ohm ) - (??ohm)mixer(???ohm) - (????ohm)filter(!ohm)-(!!ohm)output_buffer(50ohm) - ADC and if I don't need intersatge match why do I have to match at the end of front-end block(output buffer)? Last edited: Aug 31, 2010
Hello I am currently working on current mode RF receiver front-end question is do I need to conjugate match between two blocks(eg LNA - mixer) normally for current mode, input impedance should be very small and output very large. Do I need interstage match??(Rout=Rin)? antenna(50ohm) - (50ohm)LNA( ?ohm ) - (??ohm)mixer(???ohm) - (????ohm)filter(!ohm)-(!!ohm)output_buffer(50ohm) - ADC and if I don't need intersatge match why do I have to match at the end of front-end block(output buffer)?