[互助]Momentum 仿真 warning怎么处理

--- WARNING ------------------------------------------------------------------- GS<aXhk  
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S-parameter results show unphysical behavior for certain frequencies. $qvk9 B0E  
Cause        : - inaccurate (high frequency) calibration ; |I0O|Zdv  
               - electrically large via using lumped model ; Rt%3\?rf  
               - higher order modes at the ports ; t;>"V.F<1  
               - slot mode at coplanar ports ; ".@}]z8  
               - grouped strip-slot ports ; @)R6!"p  
       .. 49e~/YY  
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我也出现这样的错误了，一直没搞明白   Pc{0Js5VzE  
Q?1' JF!G  
仿真完了后，S21居然还有正数！ WNE
=|z#|  
C>A*L4c]F  
与平时仿真没什么区别，看那英文资料也没弄懂！