[SI-LIST] differential line

Dear All:
Have anybody studied differential line or single line across perforated 
reference plane? I use Ansoft to analyze this problem. I find, when there is a 
slot in the reference plane but and the reference plane is not cut, the S21 is 
not affectted seriously comparing with the S21 when the reference plane is 
integral.

Could you give me some advice?

Best Regards

Zhangkun
2003.12.29


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