Single Lossy Transmission Line (TXL)
General form:
YXXXXXXX N1 0 N2 0 mname <LEN=LENGTH>
Example:
Y1 1 0 2 0 ymod LEN=2
.MODEL ymod txl R=12.45 L=8.972e-9 G=0 C=0.468e-12 length=16
n1 and n2 are the nodes of the two ports. The optional instance parameter len is the length of the line and may be expressed in multiples of [(unit)]. Typically (unit) is given in meters. len will override the model parameter **length **for the specific instance only.
The TXL model takes a number of parameters:
Name
|
Parameter
|
Units/Type
|
Default
|
Example
|
R
|
resistance/length
|
$\frac{\Omega}{unit}$
|
0.0
|
0.2
|
L
|
inductance/length
|
$\frac{H}{unit}$
|
0.0
|
9.13e-9
|
G
|
conductance/length
|
$\frac{mhos}{unit}$
|
0.0
|
0.0
|
C
|
capacitance/length
|
$\frac{F}{unit}$
|
0.0
|
3.65e-12
|
LENGTH
|
length of line
|
unit
|
no default
|
1.0
|
Model parameter length must be specified as a multiple of (unit). Typically (unit) is given in [m]. For transient simulation only.