Introduction to Transmission Line, Transient Theory
The time-domain form of transmission line equations, commonly referred to as Telegrapher’s equations, are written in terms of time derivatives of the electric potential
V
and the current
I
as
(4-11)
(4-12)
Equation 4-11
and
Equation 4-12
can be combined into the second-order partial differential equation as
(4-13)
To ensure that the current is conserved across interior boundaries, COMSOL Multiphysics solves the following wave equation (instead of
Equation 4-13
):
(4-14)
