file_formats.txt
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The input file formats for the cable_model_builder are specific to each defined cable type.
The formats are as follows:
1. Simple cylindrical wire
0.25mm_radius_wire # Cable name
cylindrical # Cable type
1 # number of conductors
8 # number of parameters
0.25e-3 # parameter 1: conductor radius (m)
0.5e-3 # parameter 2: outer insulation radius (m)
1.0 # parameter 3: outer dielectric permittivity (air)
5.8E7 # parameter 4: conductor conductivity (S/m)
2. Coaxial cable
RG58 # Cable name
Coax # Cable type
2 # number of conductors
8 # number of parameters
0.455e-3 # parameter 1: inner conductor radius (m)
2.35 # parameter 2: inner dielectric permittivity (polythene)
1.75e-3 # parameter 3: shield conductor radius (m)
2.5e-3 # parameter 4: outer insulation radius (m)
3.0 # parameter 5: outer dielectric permittivity (PVC)
5.8E7 # parameter 6: inner conductor conductivity (S/m)
0.1E-3 # parameter 7: shield conductor thickness (m)
5.8E7 # parameter 8: shield conductor conductivity (S/m)
In addition to the cable geometry and material specification we can specify a transfer impedance
in three ways:
1. R+jwL model
2. Tabulated complex impedance data f, re{Z}, Im{Z}
3. Derived from braid geometry
The inputs to the cable_model_builder for the three transfer impedance specification types.
are as follows:
1. R+jwL model
#Transfer Impedance model: R+jwL model; R(ohms/m) L(H/m)
0.0 0.250E-8
2. Tabulated complex impedance data; f, re{Z}, Im{Z}
# tabulated complex transfer impedance data; f, re{Z}, Im{Z}; f(Hz), Z(ohms/m)
1000 # number of frequency domain samples
f1 Re{Z(f1)} Im{Z(f1)}
f2 Re{Z(f2)} Im{Z(f2)}
.
.
.
f1000 Re{Z(f1000)} Im{Z(f1000)}
3. Derived from braid geometry (TO BE SPECIFIED BY NLR - A REPRESENTATIVE DATASET FOLLOWS)
#Braid geometry
# Braid wire diameter, d (m)
# Number of wires in a carrier, N
# Number of carriers, C
# Wire conductivity, sigma (S/m)
# pitch angle, alpha (degrees)