Jul 16, 2008 #1 T triple_core Member level 3 Joined Jun 18, 2007 Messages 59 Helped 2 Reputation 4 Reaction score 1 Trophy points 1,288 Activity points 1,699 As specification, the PA should be stable even if the output VSWR=3:1 In ADS, I use the formula vswr(S22) to calculate it, the value is extrem high. I think this formula is only valid for small signal, not for PA. Can any one tell me how to verify this specification in ADS? Thanks!
As specification, the PA should be stable even if the output VSWR=3:1 In ADS, I use the formula vswr(S22) to calculate it, the value is extrem high. I think this formula is only valid for small signal, not for PA. Can any one tell me how to verify this specification in ADS? Thanks!
Jul 16, 2008 #2 madengr Full Member level 6 Joined Apr 6, 2005 Messages 394 Helped 115 Reputation 230 Reaction score 28 Trophy points 1,308 Location Kansas City Activity points 4,630 No, the spec probably means the PA should be stable into a load of VSWR=3:1. You may use a tuner element (i.e. a load pull tuner) to generate an all phase load of VSWR=3:1 or lower.
No, the spec probably means the PA should be stable into a load of VSWR=3:1. You may use a tuner element (i.e. a load pull tuner) to generate an all phase load of VSWR=3:1 or lower.
Jul 17, 2008 #3 akrcal Member level 1 Joined Aug 14, 2006 Messages 38 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,503 In power amplifier simulation you use large signal s-parameter simulation which is same as harmonic balance simulation to calculate port VSWR. Akrcal
In power amplifier simulation you use large signal s-parameter simulation which is same as harmonic balance simulation to calculate port VSWR. Akrcal