Experimental results are presented in support of the use of bulk current injection (BCI) as an alternative technique to unit-level radiated susceptibility (RS) verifications up to 1 GHz. The rationale for the correlation of BCI/RS test levels is grounded in the concept of overtesting (OT), which quantifies the excess of disturbances injected by BCI with respect to RS. Previous works showed that OT is a random variable, owing to unknown and uncontrolled setup parameters including the common-mode impedance of the equipment under test. The cumulative distribution function (cdf) of OT was shown to be predictable, by means of reasonable statistical assumptions and simple circuit models. This paper fills the gap between that simplified theoretical analysis and the complexity of real-world test setups. To this aim, an ad hoc structure mimicking typical wiring harness and equipment for aerospace applications is tested with BCI and RS to collect several results in terms of power injected/induced in the terminal units. The obtained datasets are processed to infer the empirical cdf of OT. Results are compared with theoretical predictions and properly discussed to point out the correlation between BCI and RS achieved in different test cases (vertical/horizontal antenna polarization, unshielded/shielded cables).

In this article, a systematic procedure to derive equivalent circuit networks accurately reproducing the frequency response of the input impedance of magnetic cores in a broad frequency range is presented. The proposed procedure foresees to represent the effective complex permeability spectra of a magnetic core (i.e., the permeability resulting from the superposition of intrinsic material properties and effects due to structural features of the core) by a high-order Debye series expansion, which is subsequently synthesized into suitable Foster and Cauer networks. Such networks can be implemented in any circuit simulator, and are particularly favorable for time-domain transient simulation since they can be easily combined with hysteresis models. Two nanocrystalline tape-wound cores and a commercial bulk current injection probe are used as test cases to prove the effectiveness of the proposed method both in terms of accuracy and ease of implementation.

A novel machine-learning based framework to evaluate the effect of design parameters affected by epistemic uncertainty on the performance of textile antennas is presented. In particular, epistemic variations are characterized in the framework of possibility theory, which is combined with Bayesian optimization to accurately and efficiently perform uncertainty quantification. A suitable application example validates the proposed method.

This article provides an overview of the recent advances in the characterization and modeling of power-line communication (PLC) channels in transportation systems. The salient aspects of the topological and functional features of the data channels using power networks of motor vehicles, spacecraft, and aircraft are presented. This article is tutorial in nature and guides the reader through a selection of recent papers, collecting relevant results needed to assess the feasibility and strengths of PLC for this class of applications.

In this letter, a pulse current injection (PCI) setup involving a pulse generator with adjustable parameters is designed and modeled in SPICE. In order to allow causal and accurate time-domain simulation, the circuit model makes use of an augmented network to approximate the non-rational frequency response of the injection probe. The obtained SPICE model is preliminary validated by measurement for different sets of values of the pulse-generator parameters. Afterward, an explicative example of radiated test setup is considered. The stress waveform induced at the points of entry of the equipment under test by radiation (evaluated either by theoretical prediction or by measurement in a low-level radiation environment) is taken as reference to prove the effectiveness of the proposed PCI-setup model in identifying the values of the generator parameters required to reproduce the same disturbance by PCI.