May 23, 2006 #1 S ssdd Junior Member level 1 Joined Apr 30, 2006 Messages 19 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,453 hi, why my LNA gain is negative(db)?
May 23, 2006 #2 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 Are you checking the power gain or voltage gain?
May 23, 2006 #3 S suhas_shiv Full Member level 2 Joined Nov 30, 2005 Messages 136 Helped 11 Reputation 22 Reaction score 4 Trophy points 1,298 Activity points 2,461 Probably because instead of gain you are getting loss. Have you checked your biasing and matching circuits? What kind of topology are you using? It would help if you could post your circuit.
Probably because instead of gain you are getting loss. Have you checked your biasing and matching circuits? What kind of topology are you using? It would help if you could post your circuit.
May 23, 2006 #4 W winsonpku Advanced Member level 4 Joined Jul 7, 2005 Messages 119 Helped 6 Reputation 12 Reaction score 0 Trophy points 1,296 Activity points 2,351 could you tell us the more details? ssdd said: hi, why my LNA gain is negative(db)? Click to expand...
could you tell us the more details? ssdd said: hi, why my LNA gain is negative(db)? Click to expand...
May 24, 2006 #5 S ssdd Junior Member level 1 Joined Apr 30, 2006 Messages 19 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,453 HI,friends, I post my circuit on.
May 24, 2006 #6 S ssdd Junior Member level 1 Joined Apr 30, 2006 Messages 19 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,453 i think the parameters are probably not set right,but i can't find
May 24, 2006 #7 P pfd001 Advanced Member level 1 Joined Jul 23, 2005 Messages 409 Helped 45 Reputation 90 Reaction score 10 Trophy points 1,298 Activity points 3,214 why r3
May 24, 2006 #8 S ssdd Junior Member level 1 Joined Apr 30, 2006 Messages 19 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,453 r2,r3,M3 form the transimpedance stage, I post another circuit ,you can see this one ,its gain also negative Added after 3 minutes: hi ,friends,can you leave you email or msn?thanks my msn: ss_dengdeng@hotmail.com
r2,r3,M3 form the transimpedance stage, I post another circuit ,you can see this one ,its gain also negative Added after 3 minutes: hi ,friends,can you leave you email or msn?thanks my msn: ss_dengdeng@hotmail.com
May 26, 2006 #9 S ssdd Junior Member level 1 Joined Apr 30, 2006 Messages 19 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,453 nobody?i need your help
May 26, 2006 #10 P pixel Advanced Member level 2 Joined Sep 16, 2004 Messages 508 Helped 69 Reputation 138 Reaction score 16 Trophy points 1,298 Activity points 3,993 Can you plot your DC node voltages and currents?