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A New Standard for Shielding Measurement from DC to 40GHz: IEEE P2855 (Part 1)
Time:
Monday, 01/Sept/2025:
9:00am - 10:30am
Location:Room 106
90 seats, Tower 44, 1st floor
Session Abstract
This workshop will give a general introduction to the future standard in construction P2855 about cable/connector assembly shielding effectiveness characterization from DC to 40GHz. This standard provides recommended measurement techniques for evaluating, and methods for specifying, the capabilities or effectiveness of shielding on cable/connector assemblies for the control of Electromagnetic Interference (EMI) to allow product compliance to common Government, regulatory, and customer requirements, and for achieving system Electromagnetic Compatibility (EMC). This standard also provides measurement techniques to evaluate, and methods to specify, cable/connector assemblies shielding capabilities for reducing the coupling of electromagnetic energy between cable/connector assemblies. Emphasis is placed on measurement techniques that have been adopted through incorporation into standards, both commercial and military, or that have been used extensively. A set of novelties will be presented on the methods that will be present in the standard.
The workshop is divided into topics as: Magnetic shield method, DC method, Triaxial method, Injection line method, Parallel plate method, Localized injection method, Anechoic chamber method, G-TEM cell method, Reverberation chamber, Shielding Effectiveness Measurands.
The workshop will help the audience to properly test and design cables, connectors and their assemblies for product EMC.
Targeted Audience:
• Primary: EMC engineers in electric and electronic product industries
• Secondary: Cable, connector and their assembly designers; EMC researchers.
Presentations
9:00am - 9:30am
Cable/connector assembly shielding effectiveness characterization from DC to 40GHz, the new Std P2855
With the increase in electrical systems throughout society and climate issues, EMC challenges are increasingly numerous. Cable and connector assemblies are critical points where their performance in terms of electromagnetic protection must be ensured. This requires standardized measurement methods adapted to these new challenges; it is in this context that the new IEEE P2855 standard comes into play.
9:30am - 10:00am
Shielding Effectiveness Measurements of Cables with GTEM Cell
Sahin FURKAN, Sander BRONCKERS, Anne ROC’H
TU/e, Netherlands
Shielded cables are essential for robustness against electromagnetic interference, requiring efficient and accurate shielding measurements, achievable with Gigahertz Transverse Electromagnetic (GTEM) cells. This work presents methodologies involving GTEM cells, including procedures for verifying measurement uniformity and two distinct shielding measurement methods—one comparative (shielded vs. unshielded) and another based on the FRIIS equation. These methods are evaluated, compared with alternative setups, and the influence of cable positioning in GTEM cells is also analyzed.
10:00am - 10:30am
Applying absorbers for suppressing higher-order modes when measuring the screening attenuation of connectors and cable assemblies with the triaxial method up to 10 GHz
Thomas SCHMID, Benjamin PASTOTTER
Rosenberger, Germany
Increasing bandwidth demands in electronic systems require enhanced shielding effectiveness measurements beyond traditional triaxial method frequencies, causing problematic higher-order mode generation. The presentation explores these mode-related measurement issues and demonstrates how commercial absorbers can mitigate their effects. It also highlights ongoing standardization efforts addressing higher-order mode management in triaxial setups.