Jul 16, 2007 #1 H healthy Newbie level 5 Joined Jun 3, 2007 Messages 8 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,331 In the CMOS Gilbert mixer, how to choose the transconductor`s current?The bigger the better or the smaller the better? Thank you!
In the CMOS Gilbert mixer, how to choose the transconductor`s current?The bigger the better or the smaller the better? Thank you!
Jul 16, 2007 #2 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 There are lots of trade-offs for choosing the bias current. It depends on other specs. like the linearity and noise. For example, with more current, you probably get higher linearity but noise figure.
There are lots of trade-offs for choosing the bias current. It depends on other specs. like the linearity and noise. For example, with more current, you probably get higher linearity but noise figure.
Jul 16, 2007 #3 khouly Advanced Member level 5 Joined Oct 20, 2003 Messages 2,350 Helped 461 Reputation 916 Reaction score 101 Trophy points 1,343 Location EGYPT Activity points 13,242 the linearity and the gain will be affected alot by the bias current
Jul 17, 2007 #4 P psmon Full Member level 3 Joined Jun 4, 2007 Messages 163 Helped 20 Reputation 40 Reaction score 4 Trophy points 1,298 Activity points 1,907 Too much gain worsens the linearity
Jul 17, 2007 #5 H healthy Newbie level 5 Joined Jun 3, 2007 Messages 8 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,331 Thank you for your helps.
Jul 18, 2007 #6 F fanshuo Full Member level 5 Joined Jun 21, 2007 Messages 266 Helped 8 Reputation 16 Reaction score 4 Trophy points 1,298 Location Netherlands Activity points 2,746 normally higher bias current->higher gm->higher gain also higher bias current->better linearity but higher current means more power consumed
normally higher bias current->higher gm->higher gain also higher bias current->better linearity but higher current means more power consumed