關于寬縫隙微帶貼片天線的端口激勵問題

建模完成后有這樣的錯誤： 
    Port refinement, process abc3d : There are no tetrahedral faces assigned to boundary "Imped1".  Since boundary operations are order dependent, please check to make certain that this boundary is not being ignored because of other operations on the same surface.  It is recommended that you redefine the boundary in question. 見附件。我對微帶線的邊界問題不太明白，還有端口激勵問題，請問哪位高人能幫我解決一下，或者提供些資料，先謝謝啦 
   

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