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本帖最后由 guoeda123 于 2014-9-27 13:26 编辑
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各位,我碰到个情况解决不了了 ,照着ADS2008那本书仿真低噪声放大器,我用的ads13.06版本的,仿真噪声系数的时候NFmin比书上的大不少,并且还有仿真温度是25度,和ieee标准的16度不一样,在option里改 ,但是找不到改温度的选项
: ^. ?4 g+ u' ~/ j8 v( C7 p, ]Warning detected by hpeesofsim during SP analysis `SP1'.* v- Y4 v& X' y9 }; D
The simulation temperature (25.0 C) is not the same as the IEEE standard+ t v J( n; t- K" }
noise temperature (290 K or 16.85 C) in the noise analysis `SP1'.
' B; d! ^: U2 y$ r5 z' g If the simulation temperature is not equal to the IEEE standard temperature,
5 k" x/ I* b4 q4 G1 H8 A then the loss and the noise figure will not agree for a passive circuit.
; I1 K% @- |' g& N0 y3 t The `Temp' parameter on the Options item can be set to 16.85 C to
% ~! W- v% }1 m4 g9 x$ x eliminate this warning message. 有哪位知道这是怎么回事?谢谢5 q7 ^0 a, p: j* U! |
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