2. Mitigation measures for planar shielding

2.1 Variations in the attenuation of planar conductive shields with frequency

In what follows, we make use of the attenuation of flat conductive shields based on simplified formulas derived from the rigorous expression (9) . Compared with the initial relationship, these approximate formulas offer the advantage of a finer analysis of the combined impact of frequency, electrical conductivity and material thickness.

The frequencies concerned by the digital illustration are between 100 kHz and 10 GHz, this range actually corresponding to that offered...