Nov 15, 2006 #1 N nxing Advanced Member level 1 Joined May 10, 2004 Messages 421 Helped 25 Reputation 50 Reaction score 10 Trophy points 1,298 Location China Activity points 2,856 Hello everybody, I was told by somebody that the second harmonic of the differential signals are actually common-mode signal. Is that true? How can you prove that? thanks!
Hello everybody, I was told by somebody that the second harmonic of the differential signals are actually common-mode signal. Is that true? How can you prove that? thanks!
Nov 16, 2006 #2 hr_rezaee Advanced Member level 3 Joined Oct 6, 2004 Messages 747 Helped 109 Reputation 218 Reaction score 24 Trophy points 1,298 Location Iran-Mashhad Activity points 4,025 Hi As I know it is not common mode signal but there is no second hormonic (or very small) in diff. out put. regards
Hi As I know it is not common mode signal but there is no second hormonic (or very small) in diff. out put. regards
Nov 21, 2006 #3 Verba Member level 5 Joined Apr 11, 2003 Messages 92 Helped 7 Reputation 14 Reaction score 0 Trophy points 1,286 Activity points 491 I think, that if you find second harmonic in your signal, it's caused by the common mode signal and nonlinearity of the stage. You can not see CM signal itself when you have differential signal at the input because of CMRR
I think, that if you find second harmonic in your signal, it's caused by the common mode signal and nonlinearity of the stage. You can not see CM signal itself when you have differential signal at the input because of CMRR
Nov 21, 2006 #4 safwatonline Advanced Member level 4 Joined Nov 19, 2005 Messages 1,341 Helped 219 Reputation 438 Reaction score 48 Trophy points 1,328 Location EGYPT Activity points 9,038 i think this can be considered true.