cst  問(wèn)題請(qǐng)教

我是新手,仿真是遇到以下問(wèn)題,請(qǐng)教各位！
Some higher propagating modes at port 1 are not considered in time domain calculation. this possibly leads to an inaccurate energy balance.Consider to reduce the port size or decrease the upper frequency limit.

這個(gè)問(wèn)題確實(shí)不好解決，但是似乎對(duì)結(jié)果沒(méi)什么影響。

這個(gè)問(wèn)題由來(lái)已久，一直不知道怎樣徹底解決