Coupled TL
Lattice Solver
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Aggressor
Victim (NEXT/FEXT)
Even Mode
Odd Mode
Aggressor voltage at load — V
load
(t)
Victim NEXT — Near-End Crosstalk
Victim FEXT — Far-End Crosstalk
Even Mode Voltage V
e
(t)
Odd Mode Voltage V
o
(t)
📐 Formula Reference
×
Even / Odd Mode Inductance
Le = Ls + Lm
Lo = Ls − Lm
Even / Odd Mode Capacitance
Ce = Cs − Cm
Co = Cs + Cm
Characteristic Impedance
Z₀e = √(Le / Ce)
Z₀o = √(Lo / Co)
Propagation Velocity
ve = 1 / √(Le · Ce)
vo = 1 / √(Lo · Co)
Propagation Delay
te = ℓ / ve
to = ℓ / vo
Δt = to − te (delay skew)
Reflection Coefficients
ΓL = (ZL − Z₀) / (ZL + Z₀)
ΓS = (ZS − Z₀) / (ZS + Z₀)
Initial Incident Wave
V⁺ = VS · Z₀ / (Z₀ + ZS)
Crosstalk (NEXT / FEXT)
NEXT ∝ (Lm/Ls + Cm/Cs) / 4
FEXT ∝ (Lm/Ls − Cm/Cs) · ℓ / (2·T)