•  
• EDN Europe MAGAZINE
•  
• Free SUBSCRIPTION
• Subscription Renewal
• View Media Kit

• EDN
• EDN Australia
• EDN Asia
• EDN China
• EDN Japan

Bidirectional transient field cable co-simulation

Computer Simulation Technology (CST) has announced that its CST Studio Suite version 2011, SP5, can now carry out transient bidirectional co-simulation between cable currents and the electromagnetic fields in their surrounding space.
In many EMC applications, CST says, cabling has a major impact on the immunity and emissions performance of a system. Cables can receive electromagnetic fields and propagate the induced voltages/currents through enclosures (shields) into sensitive circuits causing interference. Conversely, cables can conduct and radiate electromagnetic noise from a system resulting in EMC compliance issues.
Coupling between fields and complex cable bundles is bi-directional; cables can both receive and re-radiate electromagnetic fields. Depending on the routing/position of cables within an enclosure, the field distribution, modes and current paths can be strongly affected. In the past, modelers have often simplified the field/cable interaction problem by assuming one-way coupling, but this may produce inaccurate results.
CST says that it has overcome this limitation by tightly integrating CST Cable Studio (CST CS) with the 3D transient solvers in CST Microwave Studio (CST MWS), allowing simulation of true transient bi-directional field/cable coupling for complex cable bundles routed through complex 3D environments such as electronics enclosures, aircraft, and vehicles. The software can deliver accurate analysis, the company says, despite the huge difference in scale between cable cross-section dimensions and overall system/vehicle dimensions.