Verification of Radiated Emissions Modeling for SpaceWire/LVDS Links Routed on CFRP Ground

In their previous work, the authors proposed a methodology for predicting and modeling electromagnetic emissions in case of shielded coaxial cable with respect to the ground dielectric properties. In that work, a shielded coaxial cable was treated as a travelling wave antenna and the decomposed cont...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 56; no. 1; pp. 393 - 402
Main Authors Nikolopoulos, Christos D., Baklezos, Anargyros T., Tsatalas, Stylianos, Capsalis, Christos N.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Cable shielding
Carbon fiber reinforced plastics
Coaxial cables
Current distribution
Design standards
Dielectric properties
Differential geometry
electric field measurements
Electric fields
Electromagnetic emission modeling
Fiber reinforced polymers
Frequency measurement
Grounding
LVDS
Methodology
Modelling
Power cables
Space applications
Space missions
SpaceWire (SpW)
Traveling waves
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Summary:In their previous work, the authors proposed a methodology for predicting and modeling electromagnetic emissions in case of shielded coaxial cable with respect to the ground dielectric properties. In that work, a shielded coaxial cable was treated as a travelling wave antenna and the decomposed contribution of each phenomenon was validated through extensive electric field measurements of the cable over various ground planes and heights. In the present paper, the authors attempt to verify the applicability of this methodology in more complex structures; exploring the case of SpaceWire (SpW) cable over a carbon-fiber-reinforced polymer ground. This setup is of major interest for space applications, as it becomes the standard harness and grounding design for the majority of space missions. SpW is a space-application focused cable with four shielded twisted pairs employing low-voltage differential sign signaling, a geometry requiring rather cumbersome calculations in order to analytically extract the radiated emissions. The authors showcase that this issue can be bypassed with the proposed methodology, while measurements verify the validity of this claim also for the case of complex structures.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2019.2914540