[互助]Momentum 仿真 warning怎么处理

--- WARNING ------------------------------------------------------------------- $
f*N  
utQE$0F  
S-parameter results show unphysical behavior for certain frequencies. "dXRUg"  
Cause        : - inaccurate (high frequency) calibration ; %(Nu"3|$K=  
               - electrically large via using lumped model ; ._~_OVU  
               - higher order modes at the ports ; iT%aAVs  
               - slot mode at coplanar ports ; mgL~ $  
               - grouped strip-slot ports ; _$NFeqLww  
       .. J8J~$DU\Gv  

e4ydn  

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我也出现这样的错误了，一直没搞明白   36*"oD=@  
8t!(!<iF0  
仿真完了后，S21居然还有正数！ dd@^e)VZB  
tU>wRw=
d  
与平时仿真没什么区别，看那英文资料也没弄懂！