Patent ID: 7595638

Claim:
An inspection system, comprising: an electromagnetic shield having two opposing side walls, an end wall electrically connected to each of the two opposing side walls, and a floor electrically connected to each of the two opposing side walls and the end wall, wherein the two opposing side walls, the end wall, the floor, and the recessed housing are each formed of an electrically conductive material; an inductive sensor positioned within the electromagnetic shield, wherein the inductive sensor comprises at least two conductive traces positioned on opposing sides of a medial plane of the electromagnetic shield, wherein the inductive sensor is configured to detect a shift in a tune frequency resulting from a presence of a metallic object positioned within a scanning area of the inspection system, wherein the inductive sensor further comprises: a slot formed in and centered along a longitudinal axis of each of the at least two conductive traces, wherein the slot is configured to generate a resonant mode to detect the presence of the metallic object.