Jun 16, 2005 #1 E elbadry Full Member level 6 Joined May 6, 2005 Messages 347 Helped 72 Reputation 144 Reaction score 10 Trophy points 1,298 Location Egypt Activity points 3,884 cadence impedance How can I find output impedance in Cadence? ( I mean the whole circuit's o/p impedance and not transistors' ro) I have to use one of the periodic analysis types because my circuit is driven. Is there something quick to do that? Or would I need to add a port at the o/p, and use PSP analysis? Thanks in advance
cadence impedance How can I find output impedance in Cadence? ( I mean the whole circuit's o/p impedance and not transistors' ro) I have to use one of the periodic analysis types because my circuit is driven. Is there something quick to do that? Or would I need to add a port at the o/p, and use PSP analysis? Thanks in advance
Jun 17, 2005 #2 S sgperzoid Member level 3 Joined Mar 29, 2005 Messages 57 Helped 5 Reputation 10 Reaction score 1 Trophy points 1,288 Activity points 1,794 cadence output resistance U can simply run an sp analysis and draw the Smith chart view Then the real part and image part of the normalized output impedance can be read once you put the cursor on the S22 curve. rgds
cadence output resistance U can simply run an sp analysis and draw the Smith chart view Then the real part and image part of the normalized output impedance can be read once you put the cursor on the S22 curve. rgds
Jun 17, 2005 #3 T ThomasLee Newbie level 5 Joined Sep 14, 2004 Messages 10 Helped 4 Reputation 8 Reaction score 2 Trophy points 1,283 Activity points 81 cadence ic + input + output impedance Yes, but if elbadry says his circuit is driven? Then he would need to use psp analysis like he proposed himself. elbadry, what kind of circuit is it?
cadence ic + input + output impedance Yes, but if elbadry says his circuit is driven? Then he would need to use psp analysis like he proposed himself. elbadry, what kind of circuit is it?
Jun 17, 2005 #4 E elbadry Full Member level 6 Joined May 6, 2005 Messages 347 Helped 72 Reputation 144 Reaction score 10 Trophy points 1,298 Location Egypt Activity points 3,884 find output impedance It is a mixer... So, you suggest that I run a psp analysis and then find Z22 (with the input as port 1 and the o/p as port 2)?
find output impedance It is a mixer... So, you suggest that I run a psp analysis and then find Z22 (with the input as port 1 and the o/p as port 2)?