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Recent Advances about VIRC (Vibrating Intrinsic Reverberation Chambers) (Part 1)
Time:
Friday, 05/Sept/2025:
2:20pm - 3:50pm
Location:Room 106
90 seats, Tower 44, 1st floor
Session Abstract
Over the last few years, the interest in vibrating intrinsic reverberation chambers (the so-called VIRCs) among both industrial and academic communities has been growing rapidly. These low-cost and movable chambers are increasingly perceived as a reverberation chamber offering different possibilities and potential compared to 'traditional' parallelepipedic ones, rather than merely another kind of reverberation chamber.
Therefore, the time has come this year in Paris for the VIRC to stand on their own and organize the first workshop dedicated solely to this topic during an EMC Europe symposium!
This half-day workshop will bring together:
- A presentation on the genesis and history of VIRC by its inventor, Mr. Frank Leferink
- Technical presentations showcasing recent advances in VIRC
- Hands-on, demo, and interactive sessions with a small VIRC prototype
Presentations
2:20pm - 2:50pm
From a simple idea (or was it a mistake: you will hear the true story at the workshop), to many applications of the VIRC
Frank Leferink
University of Twente / Thales, Netherlands
How the VIRC was born ? Often it is just a basic idea. Then you do an experiment, which fails. Unless you open your mind, think about it, and hit yourself on the head. From basic experiments, frustration about poor instrumentation, help from colleagues (and your wife), to many applications which were not foreseen at all.
2:50pm - 3:20pm
VIRC for Time-Varying Radiated Emissions Testing of SmallSats and Payloads
Marc Pous
HE Space for ESA, Noordwijk, Nehterlands
A new method using VIRC is introduced to test the radiated emissions of SmallSat, payloads or units, enabling great advantages for the space industry. Measurements with FFT-based instruments addressed challenges from metallic tent movement and dynamic operating modes. The VIRC technique also allowed for quantifying the shielding effectiveness of the YPSat multi-layer insulator.
3:20pm - 3:50pm
How to assess (and increase !) the stirring process of your VIRC ?
Guillaume Andrieu1, Charles Jullien2
1XLIM laboratory, University of Limoges, France; 2Safran Electrical & Power, Toulouse
This presentation, including a live demo, presents a method (based on S21 measurements between two broadband antennas and a K-factor computation) able to assess in less than a minute the quality of the stirring process of a VIRC. This method therefore allows optimizing the stirring process as a function of the available degrees of freedom (fans, motors).
