SpaceWire: An Overview, Measurements, and Modelling for EMC Assessment

SpaceWire is a point-to-point bit shipping protocol for high-speed data communication links and networks providing equipment compatibility and seamless component reusability. It has found great application in many space missions reducing the development cost, offering architectural flexibility and improving reliability. This chapter delves into the standard describing the SpaceWire, focusing on the lower levels that play a key role in the electromagnetic behavior of the system and concern cable assemblies, shielding, bonding, and grounding. Findings regarding emissions affecting spacecraft components are presented as well as other EMC issues that have an impact on the system performance. Recent developments and upcoming updates to the standard are also presented and discussed.

SpaceWire: The Standard and EMC/EMI Aspects

Axon' Cable was selected to carry out the development of a new, compact impedance-matched SpaceWire (abbreviated herein to “SpW”) connector under an ESA Technology Research Project. The classic existing SpW connector, the 9 way micro-D, whilst having the advantages of being both small and common to many projects, is not electrically optimized to the SpW needs, nor is it particularly efficient when it comes to EMC protection. As high data rate applications are booming, there is, a pressing need to develop an improved connector interface.

Compact, impedance-matched SpaceWire connector development — “MicroMach SpaceWire”: SpaceWire components, long paper

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Compact, impedance-matched SpaceWire connector development — “MicroMach SpaceWire”: SpaceWire components, long paper