CST MWS多導體設置差模與共模問題

如題設置差模與共模的時候出現警告：The multipin potential settings on port 1 result in linearly dependent field patterns. Please note that the mode fields will be orthogonalized to ensure stability.還有在獲得S參數的前面部分，它的回波損耗參數居然一部分為正，請問有誰遇到過這種問題嗎？十分感謝

請學會使用軟件的幫助文件。
CST MWS幫助文件《Sources and Boundary Condition Problem Handling》。
The multipin potential settings on port "xxx" result in linearly dependent field patterns. Please note that the mode fields will be orthogonalized to ensure stability.
The defined potential sets should result in linear independent field patterns, e.g. the ”even” and ”odd” modes in a three conductor port. Otherwise the fields at the port cannot properly be decomposed into mode amplitudes. Please check whether the potential set definition is meaningful or consider treating the port as single-ended.
樓主要注意學術詞匯的嚴謹性。按照回波損耗的定義，無源系統的回波損耗就應該是正值。
說白了，樓主問了兩個算命貼。

不好意思哈！新手小白，我想說的就是S11參數。它一部分為正數，在計算TDR的時候就發生了有負數的情況

那個文件太大了，我看能直接發給你不