ansys designer8 运行警告

hu1234567

运行结果出现Port 'Port1' is referenced to infinity.  Results maybe appear non-passive.  Use caution when interpreting the results.
-parameter value(s) greater than 1 at 1 GHz!
-parameter value(s) greater than 1 at 2.25 GHz!
-parameter value(s) greater than 1 at 1.625 GHz!
-parameter value(s) greater than 1 at 1.3125 GHz! 等等
请问是什么意思，哪里的问题