Nanomanufacturing - Key control characteristics - Part 11-7: Electromagnetic compatibility - Shielding effectiveness of nano-composites based on dielectric nanoparticles: free-space method

This part of IEC 62607 establishes the key control characteristics shielding effectiveness of nano-composites based on dielectric nanoparticles by the free-space method. It applies to nano-composite materials incorporating high-permittivity nanoparticles (e.g. barium titanate, BaTiO₃) intended for electromagnetic interference (EMI) shielding applications. The method allows the determination of shielding effectiveness in the microwave and millimeter-wave frequency ranges without requiring direct electrical contact. This standard is intended to overcome limitations of existing shielding effectiveness measurement standards, which are not optimized for non-conductive or weakly conductive nano-composite materials based on dielectric constituents. The method described herein enables reproducible, material-level assessment of shielding performance for research, quality control, and industrial qualification purposes. The document defines key measurement procedures, test setup, data evaluation, and reporting requirements using the free-space method. It is applicable to flat sample geometries and supports comparison of material performance across different compositions and processing techniques.