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A New Standard for Shielding Measurement from DC to 40GHz: IEEE P2855 (Part 2)
Time:
Monday, 01/Sept/2025:
11:00am - 12:30pm
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
11:00am - 11:30am
Localized Injection up to 20GHz, new transfer parameter
Charles JULLIEN, Thomas COLLETER
Safran Electrical & Power, France
Electromagnetic shielding must meet these challenges, requiring its characterization at increasingly high frequencies. Conventional testing methods, such as MSRC or anechoic chambers, require large test volumes. The localized injection method with stripline probes is a compact and inexpensive alternative for obtaining results on shielding performance over a wide frequency band.
11:30am - 12:00pm
Shielding Effectiveness using Semi Anechoic (SAC) and GTEM Cell Methods
Jack MCFADDEN
ETS Lindgren, USA
This presentation describes methods for measuring screening attenuation (SA) using Semi-Anechoic Chambers (SAC), focusing on emission and immunity tests via Reference Cable and Site Attenuation methods. It compares results obtained with shielded versus unshielded cable assemblies. Significant differences between the methods and their impact on measurement accuracy and standard traceability are discussed.
12:00pm - 12:30pm
Transfer impedance measurement method for flexPCB shields
Jaco VERPOORTE, Jesper LANSINK ROTGERINK
NLR, Netherlands
Flexible printed circuit boards (flexPCBs) offer advantages in weight, volume, and controlled crosstalk compared to traditional wiring, making them promising for aircraft applications. Shielding effectiveness against internal (crosstalk) and external (HIRF, lightning) effects requires accurate measurement of shield transfer impedance. A new measurement setup, inspired by the triaxial method, has been developed and tested for flexPCB shield evaluation.
