Part Number: DS90UB960-Q1
the S12 prameter is no lower frequence, which frequency do you recommend? 0.1*Fback channel?

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Part Number: DS90UB960-Q1
the S12 prameter is no lower frequence, which frequency do you recommend? 0.1*Fback channel?

Hello, I am not completely understanding your meaning, this table is for Single-Ended PCB Traces With Attached PoC Networks.
If the Transmission Channel Requirements for Coaxial Cable Applications, please refer to Table7-6 which include lower frequency for S12 parameter.

If I misunderstanding your meaning, please contact me again. Or we could communicate with Chinese in order to understand your question.