I have the below and want to check how I would calcualte Vin

I have the below and want to check how I would calcualte Vin

Vin in the aggressor conductor is a voltage step of 2V with a rise time of 100ps

Rin = 70 Holmes

ZO = 70.7 Holmes

Note that the Vs voltage at the input to the aggressor conductor is:

VS = Vin x (Rin / (Rin+Zo))

Solution

Vin, in the aggressor conductor is a voltage step of 2 V with a rise time of 100 ps.

so far I have Zo = 70.71 Vp = 176776695 m/s# KNE = 0.08125 0.5Vin(t) = Vs(t) td = l/Vp =282.8 ps which gives Vs(t)-Vs(t-2td)=0.5(Vin(t)-Vin(t-565.7 ps))

Reference https://www.physicsforums.com/threads/next-and-fext-voltages.838020/

Use the following equations: VNE = KNE[Vs(t) - Vs(t - 2td)] KNE = (Vp / 4)[(CM * Zo) + (LM / Zo)] VFE = KFE * l * (d / dt)[Vs(t - td)], where l is the length of the line. KFE = 1/2[(CM * Zo) - (LM / Zo)] to calculate the magnitude of the NEXT and FEXT voltages generated in the victim conductor when the source voltage, Vin, in the aggressor conductor is a voltage step of 2 V with a rise time of 100 ps. [Note that the Vs voltage at the input to the aggressor conductor is Vs = Vin[Rin / (Rin + Zo)] .] CM and LM are, respectively, the mutual capacitance and inductance per metre length.

Reference https://www.physicsforums.com/threads/next-and-fext-crosstalk.818808/