Multiconductor Transmission Line Modeling of Crosstalk Between Cables in the Presence of Composite Ground Planes

Modern transportation systems, such as aircraft, are increasingly replacing metal body parts for composite materials, such as carbon-fiber reinforced plastics. Despite the multiple advantages in terms of weight, size, and fuel consumption, this trend is posing a challenge for protection of cables ag...

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Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 2021-08, Vol.63 (4), p.1231-1239
Main Authors: Rotgerink, Jesper Lansink, Serra, Ramiro, Leferink, Frank
Format: Article
Language:English
Subjects:
Aircraft
Aircraft design
Aluminum
Body parts
Cables
Carbon fiber reinforced plastics
carbon-fiber reinforced plastics (CFRP)
Composite materials
composites
Conductors
Crosstalk
Design optimization
Electromagnetic interference
Fiber composites
Ground plane
Impedance
Impedance matrix
lossy ground planes
Mathematical model
multiconductor transmission lines
Resistance
Risk assessment
Transmission line matrix methods
Transmission lines
Transportation systems
Wires
Wiring
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Summary:Modern transportation systems, such as aircraft, are increasingly replacing metal body parts for composite materials, such as carbon-fiber reinforced plastics. Despite the multiple advantages in terms of weight, size, and fuel consumption, this trend is posing a challenge for protection of cables against electromagnetic interference. Early risk assessment and optimization of cable design in modern aircraft require reliable methods that can quickly and accurately estimate crosstalk behavior in the presence of lossy ground planes. This article presents two novel methods to incorporate such lossy ground planes into the crosstalk modeling of cable bundles. The first method considers the ground plane as a discrete collection of cylindrical conductors. In the second method a ground impedance matrix is derived for lossy ground planes with a finite thickness. Results of both methods are compared to full-wave simulations and measurements, yielding excellent results in terms of accuracy and computation times. The discretized ground plane method is also applied to the case of wire pairs that are enclosed by two ground planes, both aluminum and carbon-fiber reinforced plastic, as a first step towards investigation of wiring that is embedded in thermoplastic material. Once more simulations and measurements are in good agreement.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2020.3040689