ADS layout生成器件后引入到电路仿真报错，

重贴一下报错内容：
Simulation / Synthesis Messages
Warning detected by hpeesofsim in topology check during circuit set up.
    Number of nodes with only one device attached (topology corrected): 5
    Number of nodes with no DC path to ground (topology corrected): 19
Error detected by hpeesofsim during TRAN analysis 'SP1'.
    `test_1': S-parameters are not available at 0 Hz.
Error detected by hpeesofsim during TRAN analysis 'SP1'.
    Fatal error occurred while evaluating model `MomCmpt', instance `test_1'.
Status / Summary

hpeesofsim (*) 331.200 May  6 2008 (built: 05/06/08 00:26:15)
Copyright Agilent Technologies, 1989-2008.
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***** Abnormal Simulator Termination *****
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The simulator has unexpectedly terminated.

可能是你在layout下的频率设置和schematic下的不同。

频率设成一直也不管用啊，那位高手帮忙解答胰一下怎么化解啊?
Simulation / Synthesis Messages
Warning detected by hpeesofsim in topology check during circuit set up.
    Number of nodes with only one device attached (topology corrected): 10
Error detected by hpeesofsim during SP analysis 'SP1'.
    `X090224_output_1': Syntax error in the Layout Component ModelDatabase citi-file.
Error detected by hpeesofsim during SP analysis 'SP1'.
    Fatal error occurred while evaluating model `MomCmpt', instance `X090224_output_1'.
Status / Summary

你用的似乎是ADS2008或者2009吧。
按我的经验，在layout中将频率从0开始设置而不是只设要仿真的范围。

你是lookalike回去的吗?sch仿真时，你是不能改变端口频率范围。lookalike成功后有个对话框要提示这些内容的

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