Conference Agenda

The paper describes the extension of a previously proposed measurement method for the determination of the shielding effectiveness of larger cabinets. The new method uses a simple setup consisting of straight wires both for transmitting and receiving electromagnetic waves. The method was proved usable for smaller racks and up to 8GHz. After that a larger object in the form of a metallic cargo box was investigated. Additionally, the test frequency was extended up to 44GHz. The proposed method was compared with standardized shielding effectiveness determination methods, for which the upper frequency limit is currently at 18GHz. Our investigations can support the definition of a new standardized method for shielding attenuation measurements beyond 18GHz.

This paper evaluates the measurement errors for multipoint fixed-position-based methods performed in semi-reverberant environments.

The electromagnetic field levels obtained using this method are compared with the ones obtained using a random-walk-based method by examining both mean and maximum field levels.

A bias-variance decomposition is applied to quantify the root mean square error for different numbers of measurement points and various environments.

The results of using this method show a low uncertainty in estimating the average field levels.

While the error level for maximum field estimation is relatively high, it shows great improvements compared to a single-point fixed-position measurement.

Furthermore it is shown that a small increment in the number of measurement points improves the accuracy significantly.

Hence, this error quantification proves to have strong potential in accurately estimating both mean and maximum field levels for complex electromagnetic environments when volume-sampling-based methods are applied.

The study particularly targets electromagnetic environment characterization with multiple sensors, and applications where monitoring of electromagnetic environment is crucial, such as TEMPEST and shielding integrity.

This paper investigates the impact of the number of stirring configurations on shielding effectiveness measurements of shielded enclosures in different types of reverberation chambers , namely mode-stirred and vibrating intrinsic reverberation chambers. A non-invasive method based on Q-factor estimations is used to assess SE. Experimental results demonstrate that increasing the number of stirring configurations enhances measurement accuracy and enables the evaluation of higher SE values especially in vibrating intrinsic reverberation chamber.

This paper presents a numerical approach to modelling the EMC performance of cables used in electric vehicles. The shielding effectiveness of the cables is predicted using the transfer impedance, which can be calculated through analytical and/or numerical approaches. The advantage of the numerical method lies in its capacity to handle complex wiring configurations and diverse materials, offering more flexibility than analytical methods. Several configurations have been investigated and modeled, including one designed for electric vehicle applications. Results obtained by numerical modelling are compared with analytical models and validated against measurements acquired from a triaxial test bench. A good agreement was observed between the numerical model and the experimental results.