Electromagnetic Compatibility Simulation

Simulating Electromagnetic Intereference and Compliance with EMC Standards

What is Electromagnetic Compatibility EMC?

Electromagnetic compatibility (EMC) describes the ability of an device to operate as intended in its environment without interfering with other devices. Controlling electromagnetic interference is an integral part of the development of any electronic device. By law, products must comply with international EMC standards which regulate EM emissions and the susceptibility of electrical and electronic systems in order to be sold. A successful product must strike a balance between EMC and competing design requirements such as size, cost and performance, and this can pose major challenges to engineers. The earlier a potential EMC problem is identified, the less disruption it causes to the design process. By including EMC compliant design at an early stage, additional costly development iterations can be avoided later on.

Electromagnetic compatibility (EMC) regulations shall ensure that devices must not emit electromagnetic fields that can disrupt other electronics, and must be able to withstand interference from nearby devices and from environmental electromagnetic effects (E3) such as lightning strikes or electromagnetic pulse.

How can simulation help with EMC?

Electromagnetic simulation gives engineers a detailed view of all EMC-relevant aspects of a device – from the flow of currents across a circuit board, to the propagation of fields between co-site antennas – and helps them identify and resolve potential problems before testing. This not only cuts development time and costs, but can also reduce the risk of failing regulatory EMC testing. SIMULIA’s simulation portfolio includes a range of specialized tools for interference and EMC analysis, powered by fast, accurate 3D solvers.


  • EMC Rule Checking
  • EMC virtual testing
  • Co-site interference
  • E3 - Electromagnetic Environmental Effects
  • Cable harness simulation

With CST Studio Suite technology, the relevant EMC categories emissions and susceptibility can be studied. It also enables the investigation of system level effects, either by its sheer ability to tackle very large and complex set-ups efficiently, or by using hybridization between the most appropriate solvers, dedicated to a certain problem class, such as cables for example.

Additional EMC Resources

EMC/EMI Applications

Simulation of Crosstalk and De-sense in a Mobile phone

in our interactive infographic you will be intoduced  the electromagnetic compatibility (EMC) and signal integrity (SI) issues affecting the design of a mobile phone by short videos.

Crosstalk and de-sense in a mobile phone

Bulk Current Injection | Application Note

Learn more about the Bulk Current Injection (BCI) technique, a non-invasive method due to test the immunity of electronic devices.

To the BCI application note

SIMULIA Electromagnetics Technology for EMC/EMI Simulation

SIMULIA develops simulation technology that  can be used to calculate electromagnetic fields in a wide range of application, areas. These techonoligie are particularly useful for EMC/EMI simulation. Depending on your working environment this technology is available to you in various ways: 

Electromagnetics on the 3DEXPERIENCE Platform

EM simulation software is a game changer when it comes to reducing the time and cost of bringing a product to market, not just in the high-tech industries of electronics and communication.

Explore the 3DEXPERIENCE Platform

3DEXPERIENCE Works Electromagnetics

Electromagnetics Engineer is a high-performance 3D electromagnetic simulation solution. Powered by the industry proven CST Studio Suite, this cloud-enabled role delivers fast, effective simulation and design guidance of electro-mechanical devices, PCB’s, antennas in a truly multi-physics environment.

Explore 3DEXPERIENCE Works Electromagnetics Engineer

CST Studio Suite

CST Studio Suite is a high-performance 3D EM analysis software package for designing, analyzing and optimizing EM components and systems.

Explore CST Studio Suite