2025 Electromagnetic Benelux User Day

2025 ELECTROMAGNETICS BENELUX USERS DAY (EM-BUD)

November 26, 2025 in ‘s-Hertogenbosch, The Netherlands

In partnership with

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HI-TECH, In partnership with Dassault Systèmes, is pleased to invite you to the ELECTROMAGNETICS BENELUX USER DAY 2025 event in ‘s-Hertogenbosch (Den Bosch), the Netherlands on November 26, 2025.

During this day, experts from Dassault Systèmes, and HI-TECH, will inform you about the latest developments on Electromagnetics simulations. But also users of CST STUDIO SUITE and OPERA will share their knowledge and best practices with the attendees.

Why should you attend this event?

Agenda

09:00: Registration open

09:45: Welcome Remarks

Chris Caenen | Sales Manager | HI-TECH RF & Microwave Solutions

10:00: Hybrid DC-RF electron accelerator design using the CST Studio Suite 

Ameya Patwardhan | PhD Candidate | Eindhoven University of Technology

Development of compact tabletop electron accelerators often involves a combination of a DC high voltage for initial acceleration of the electrons and a high-quality factor microwave cavity with very strong AC electric fields for subsequent acceleration to the desired final energy.

In this presentation, the design challenges of such an electron accelerator will be highlighted. Solving these challenges involves a combination of several simulation technologies in the CST Studio Suite, such as electrostatic solvers, magnetostatic solvers, frequency domain solvers, particle tracking and multipacting simulations.

Thorough modelling of all interactions enables the development of a compact and high-performance electron accelerator.

10:30: A Thermally Enhanced Evanescent-Mode Dual-Ridged Waveguide Antenna Array for Millimetre-Wave Applications 

Thijs Brouwers | Senior Antenna Engineer | The Antenna Company

The presenter will explore the design and performance of an all-metal millimeter-wave antenna array engineered for improved thermal performance. The array was developed and simulated using CST. While the primary focus will be on the array’s performance characteristics and the advantages of this design for millimeter-wave active arrays, he will also review the key CST modelling steps taken to design the array.

11:00: Tea Break

11:20: Interference Model for the JUICE Spacecraft

Zoltan Kiss |  EMC Engineer | European Space Agency 

This presentation will address the issue of in-flight interference affecting the JUICE radar instrument by detailing the comprehensive interference modelling approach developed to mitigate it. The core of this analysis involves the CST Studio Suite simulation, with the speaker providing a granular look at the model, covering aspects like excitation ports, meshing challenges, and the strategic use of different EM solvers. The audience will be shown how computational resources were optimized and, most importantly, the final simulation results and model predictions for the radar’s performance.

11:50: Upcoming Technology Update for CST v2026-I   – Part I

Sajid Asif | Industry Process Consultant | Dassault Systèmes 

Dassault Systèmes has launched the 2026-I release of CST STUDIO SUITE. Sajid will demonstrate the new features in the 2026 release of the electromagnetic portfolio. These products increase the versatility and performance in modeling and simulation by introducing a wide range of technology enhancements and workflow improvements. The talk will be split into two parts.

12:30: Lunch Break

13:30: Upcoming Technology Update for CST v2026-I  – Part II

Sajid Asif | Industry Process Consultant | Dassault Systèmes 

14:10: Radar Cross Section Simulation in CST Studio Suite 

Kamal Mustafa | Application Engineer |  HI-TECH RF & Microwave Solutions

CST Studio Suite® can be used to simulate Radar Cross Section (RCS). Kamal Mustafa will cover the fundamental theory of RCS and the numerical techniques needed to calculate it for complex systems. It details the use of hybrid solvers to accurately handle large structures and emphasizes advanced diagnostic tools like hotspot and ISAR analysis. The goal is to provide a complete technology for material design and performance assessment essential for RCS reduction efforts.

14:40: Afternoon Break

15:00: Quiz – Benelux Electromagnetic Simulation User of the Year

Kamal Mustafa | Application Engineer |  HI-TECH RF & Microwave Solutions

The attendee that answers correctly the most questions will be crowned “Electromagnetic Simulation User of the Year”. These will be practical questions related to CST STUDIO SUITE and OPERA.

15:20: CST Microwave Studio for Mutual Coupling Control and RF Troubleshooting

Prof. Hubregt J. Visser PhD | Senior Researcher | IMEC Netherlands

This presentation connects two related topics in planar microwave design: reducing mutual coupling in printed antenna arrays and improving simulation accuracy for planar transmission lines. 

For wideband microstrip patch antennas on thick grounded substrates, strong surface waves can increase coupling between elements. By adjusting the substrate size and antenna positions, these surface waves can be made to cancel each other, reducing coupling effectively. 

The study also looks at how coaxial feeds and waveguide ports influence simulation results. While waveguide ports on coaxial connectors work reliably, using them directly on printed transmission lines can cause numerical errors. Adding short coaxial sections as transitions offers a simple and accurate solution, enabling reliable TRL-based impedance extraction for both microstrip and coplanar waveguide lines. This allows for troubleshooting RF PCB designs. The combined results show that careful design of the substrate and feed improves both performance and simulation consistency in printed microwave structures.

15:50: Quiz results & Closing Remarks

Chris Caenen | Account manager | HI-TECH RF & Microwave Solutions

16:00 End of the day and drinks

Venue