HFSS矩形波导建模时引入激励时出错

如题,参数如下:  
                        unit :       mm  
                       position 0,0,0  
                         X:   a                                      10  
                         Y:   c                                       20  
                         Z:   h                                        5  
                    
 
                          边界条件为:与XY平面,YZ平面分别平行的四个平面设为 Perfect  E  
                         然后设激励时,选择与XZ平面平行的其中一个平面设为:Wave port   
                         时,teminal line为undefined,就出错了  
                         错误:length  of  port lines must be greater than zero  
   
                       各位前辈,请问哪里出错了呢？  
 
                        模型已经传上来了,验证是出现两个waring:3D Model    ;Analysis Setup 
 
  HFSSDesign1 
    [warning] Model dimensions are beyond the range of 1e-006 to 10000 (2:56 上午  一月 11, 2009) 
    [warning] Solution Setup 'Setup1': Given the specified frequency and model dimensions,  an extremely large mesh will be required to produce an accurate solution.  Your model and/or frequency units may be set incorrectly. (2:56 上午  一月 11, 2009) 
    
应该怎么改才对啊？

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