Abstract: A device for electromagnetic characterization of a tested structure elevates, on a predetermined frequency band, distribution parameters of the structure and parameters characteristic of the spurious rays of the structure. The device includes an electric signal generator and an analyzer for analyzing the signal transmitted by the generator and signals reflected by the structure and signals transmitted by the structure. In addition, the electric signal generator is a pulsed signal generator whereof the spectrum is at least as broad as the predetermined frequency band, and the analyzer includes a filter for temporal filtering of the signals it receives, to eliminate spurious signals.

Abstract: The invention concerns a device for electromagnetic characterisation of a tested structure (2), by evaluating, on a predetermined frequency band, distribution parameters of said structure (2) and parameters characteristic of the spurious rays of said structure (2), comprising an electric signal generator (4), means (8) for transmitting said electric signal to the tested structure (2), means (6) for analysing the signal transmitted by the generator (4) and signals reflected by the structure (2) and signals transmitted by the structure (2), the analysing means (6) comprising means for calculating said parameters. In addition, the electric signal generator (4) is a pulsed signal generator whereof the spectrum is at least as broad as said predetermined frequency band, and the analysing means (6) comprise means for temporal filtering of the signals it receives, to eliminate spurious signals.

Abstract: An antenna includes a probe capable of transforming electrical energy into electromagnetic energy and inversely. It further includes an assembly of elements made of at least two materials different in permittivity and/or permeability and/or conductivity within which the probe is arranged, the arrangement of the elements in the assembly ensuring radiation and spatial and frequency filtering of the electromagnetic waves produced or received by the probe, which filtering allows in particular one or several operating frequencies (f) of the antenna inside a frequency band gap (B).