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Twin Wire Cable, Physical Model (TWC)

Properties	Description	Units	Default	Range
DO	Inner diameter of outer conductor	m	Required	> 0
DI	Diameter of inner wires	m	Required	> 0
S	Spacing between two conductors	m	Required	> 0
P	Physical length	m	Required	> 0
ER	Relative dielectric constant of dielectric of homogeneously filled cable	none	Required	> 0
RB	Conductor resistivity	micro-Ohm*cm	0.0	³ 0
TAND	Dielectric loss tangent	none	0.0	³ 0

Notes

TWCP:NAME n1 n2 n3 n4 DI=val DO=val S=val P=val ER=val
+ [RB=val] [TAND=val]

TWCP:TWCP1 1 2 3 4 DO=2.7MM DI=0.3MM S=0.35MM P=184MM ER=2.54
+ RB=1.7 TAND=0.0002

1. Ramo, Whinnery, and Van Duzer, Fields and Waves in Communication Electronics, John Wiley & Sons, Inc., New York, 1965, Chapter 8.

2. Green, Leibe, and Curtis, “Formulas for Shielded Pairs,” Bell Systems Tech. Journal, pp 248-284, April, 1936.


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