ansys designer8 运行警告

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

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