Recently, a framework for optimization of wideband antennas that takes into account antenna parameter tolerances and fabrication uncertainty has been proposed by the authors. In this follow-up paper, we show that the method can be adapted to the optimization for the patterns of leaky-wave antennas (LWAs). In particular, using predetermined tolerances of the manufacturing process, the length of a LWA will be optimized such that the sidelobe level is not higher than -18 dB with a calculated failure probability of less than 1%. The results further demonstrate the flexibility and applicability of the previously proposed method for antenna optimization in general.

This paper focuses on the statistics' assessment of a coaxial line's capacitance, assuming that it is affected by electrical and geometrical uncertainties. For this purpose, a non-intrusive polynomial chaos expansion was applied and compared to a crude Monte Carlo method.

In most cases, a generic subsystem embedded inside a vehicle or more generally an electronic system may be threatened by intentional transmitters close to it. Cabling and apertures offers major routes by which electromagnetic interference (EMI) will enter a subsystem. Since electronic systems (aeronautical ones for instance) are often subjected to thermal and mechanical random variations, their geometrical structures may become uncertain. Previous works laid emphasis on the importance of propagating these uncertainties via transmission-line method, TLM, (M. Panitz and C. Christopoulos, in Proc. ICEAA, 2012, pp. 182–185). Few studies were achieved to experimentally check the impact of random variables (r.v.'s) modeling in EMC framework (D. Thomas et al., in Proc. ESA workshop on EMC, 2012). Figure 1 gives an inner view of the cabinet designed and achieved by EMC group (Institut Pascal) to automate Monte Carlo (MC) the electromagnetic propagation of waves inside the enclosure assuming random geometrical variations due to moving external trap (T), inner moving plate (P) and rotating stirrer (S). Figure 2 shows a set of MC measurements of parameter S21 between emitting MSRC log-periodic antenna and dipole (Fig. 1).

This paper addresses the safety assessment of an ElectroMagnetic Compatibility (EMC) device, namely a transmission line. We assume that both the physical parameters of this transmission line and those of the illumination wave are uncertain. The objective is to assess the probability of occurrence of an extreme event defined in terms of requirements imposed on the current circulating in the line. The work is based on methods of the structural reliability research community. The efficiency and accuracy of the applied methods are compared with reference results obtained by simulations.