Electromagnetic shield for an electronic device

An electronic device comprising:

• a substrate having opposing top and bottom surfaces;
• a ground layer disposed in the substrate;
• an electrically conductive chassis having a mounting surface to receive the bottom surface of the substrate and in electrical contact with the ground layer by a ground stitch via;
• and
• an electromagnetic shield defined by the ground layer, the ground stitch via and the chassis to enclose the bottom surface of the substrate and protect the bottom surface from electromagnetic interference;
• and
• a non-conductive cover assembled to the substrate in tension so that an interior surface of the cover applies a force to the top surface of the substrate thereby ensuring the chassis maintains in electrical contact with the ground layer.

An electronic device comprising:

• a substrate having opposing top and bottom surfaces;
• at least one first electrical component mounted on the bottom surface of the substrate;
• a ground layer disposed in the substrate adjacent the top surface of the substrate;
• and
• a chassis formed as a single metallic component and having a mounting surface to receive the bottom surface of the substrate, wherein a Faraday cage is a formed with the ground layer and the chassis to enclose the bottom surface of the substrate and the first electrical component mounted thereto thereby protecting the at least one electrical component from electromagnetic interference.