Shielding for electronic circuit

It is proposed to provide a metal structure from a plurality of non-contiguous partial regions on a substrate, wherein the sections are at least partially capacitively coupled to each other. This can be achieved by the partial regions have on both sides of the substrate overlaps and / or by the portions are interconnected by means of capacitors. The capacitive coupling provides high frequencies generated a short circuit and an open circuit for low frequencies. Thus, there is the frequency selective surface. The invention is applicable to MRI systems, which could be disturbed by electronic circuits.