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Practical Applications of Modern Stochastic Simulation and Modelling (Part 1)
Time:
Friday, 05/Sept/2025:
11:00am - 12:30pm
Location:Room 108
120 seats, Tower 44, 1st floor
Session Abstract
Various stochastic simulation methods have recently matured to deliver uniquely efficient solutions for complex and uncertain electromagnetic field and circuit-level problems but very few EMC and SIPI engineers are actively using them yet. This workshop will review the technical foundations of such stochastic methods but focus more specifically on demonstrating practical applications of today’s stochastic simulation tools and modelling methodologies, highlighting the compelling reasons why they should be used.
Stochastic simulation methods may address the uncertainty in 3D enclosure fields (e.g., reverberation chambers). They may address uncertainties in CE / CS of multiconductor cable assemblies. Or they may use statistical wave physics modelling for RE / RS performance of in-situ coupled cable-cavity field systems. Candidate stochastic simulation methods include (but are not limited to):
Monte Carlo and Sobol-type sensitivity indices
Polynomial Chaos theory
Reverberation chamber theory
Statistical Power Balance modeling
Stochastic Greens function simulation
Random coupling model
Machine learning approaches
The most recent advances in these stochastic simulation methods have provided new, simpler wave power solutions to previously intractable problems. They provide more robust quantification of uncertainty than empirical margins, and they have used statistically reduced order formulations to solve 10+ GHz EMC problems 1000x faster than deterministic, numerical models. Together, these innovations begin to make simulation-baseddesign for EMC and SIPI truly possible. This Workshop will demonstrate the newly available solutions for important practical design applications, such as
Enclosure shielding effectiveness (SE)
Electric field levels in multiple connected, semi-reverberant compartments
Power system-level EMC
Cable harness and PCB radiated and conducted emissions (RE&CE)
Cable harness and PCB radiated susceptibility (RS)
High intensity radio frequency (HIRF) induced current and (SAE / RCTA DO-160)
Lightning modelling,
Combined direct and indirect electrostatic discharge (ESD)
Full system-level electromagnetic environment effects (E3) evaluation (MIL-STD-464)
Presentations
11:00am - 11:30am
Applications of Power Balance methods and stochastic EM method - from wireless applications to HIRF and IEMI evaluation in aircraft
Isabelle Junqua
ONERA, France
The talk presents an overview of Power Balance methods, and stochastic electromagnetic (EM) techniques applied across multiple domains, from wireless applications to High-Intensity Radiated Fields (HIRF). The research demonstrates how these methodologies can be effectively utilized for Intentional Electromagnetic Interference (IEMI) evaluation in aircraft and critical infrastructure environments.
11:30am - 12:00pm
Co-simulation of 10+ Gbps Signal Integrity in a System-level EMI Environment
Paul Bremner
RobustPhysics, USA
The signal integrity of new, higher speed digital interconnects using PAM4 modulation to reduce bandwidth are more susceptible to voltage noise – including electromagnetic interference (EMI) from the noisy operating environment in an automobile or electric powered aircraft. This presentation will show how the time domain statistics of Radiated Immunity environments in a vehicle can be predicted by Stochastic Power Balance modeling and combined with the interconnect random voltage noise sources in a co-simulation that provides a robust prediction of the channel bit error rate probability density distribution.
