An electromagnetic shield including a base portion and opposing recess walls extending from the base portion at an angle with respect to a plane in which the base portion extends, so as to, together with the base portion, define a recess. At least one recess wall may be arranged such that it has a distal edge with respect to the base portion, wherein the distal edge includes a cylindrical portion. In alternative or in addition, at least one recess wall may be arranged such that at least a portion thereof curves outwards or inwards with respect to the recess.