May 21, 2007 #1 N No one Full Member level 5 Joined May 11, 2005 Messages 287 Helped 4 Reputation 8 Reaction score 2 Trophy points 1,298 Activity points 3,425 Hello Everyone; In a design, I have used a mixer; but the LO leakage to IF section is considerable. How I can attenuate it?
Hello Everyone; In a design, I have used a mixer; but the LO leakage to IF section is considerable. How I can attenuate it?
May 21, 2007 #2 khouly Advanced Member level 5 Joined Oct 20, 2003 Messages 2,350 Helped 461 Reputation 916 Reaction score 102 Trophy points 1,343 Location EGYPT Activity points 13,242 what is the circuit topology of ur mixer is it Gilbert cell , or what , specify it and then e can check khouly
what is the circuit topology of ur mixer is it Gilbert cell , or what , specify it and then e can check khouly
May 21, 2007 #3 V vfone Advanced Member level 6 Joined Oct 10, 2001 Messages 5,719 Helped 1,617 Reputation 3,239 Reaction score 1,251 Trophy points 1,393 Activity points 36,323 You can use a diplexer which separates frequencies but provides Zo termination for all components.
May 21, 2007 #4 D DR350SE Junior Member level 2 Joined Dec 16, 2002 Messages 23 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 74 Balanced or double balanced is better or if there is space ....filters
May 24, 2007 #5 G GDF Full Member level 3 Joined Aug 11, 2005 Messages 175 Helped 2 Reputation 4 Reaction score 1 Trophy points 1,298 Activity points 2,895 Did you use Gilbert cell for your mixer? And, what is the frequecy of your IF and LO, if they operate in far distance on spectrum, use a simple RC low pass filter to filter it out. (Of course, high pass filter can help if IF is higher than LO)
Did you use Gilbert cell for your mixer? And, what is the frequecy of your IF and LO, if they operate in far distance on spectrum, use a simple RC low pass filter to filter it out. (Of course, high pass filter can help if IF is higher than LO)