Patent ID: 8462519

Claim:
A method of shielding a circuit board, the method comprising: placing at least two lower electromagnetic shields over different areas of a surface of a circuit board, the at least two lower shields each comprising an upper wall and side walls that extend continuously around all of a periphery of the upper wall, the at least two lower shields defining with the circuit board respective shielded cavities on the circuit board; and placing an upper electromagnetic shield over an area of the surface of the circuit board, the upper shield having an upper wall and side wails that extend continuously around all of the periphery of the upper wall to form a fully shielded cavity, the upper shield enclosing the at least two lower shields, wherein each of the two lower shields extends from one side wall of the upper shield to an opposite side wall of the upper shield such that at least one additional shielded cavity is formed on the circuit board over the area between the at least two lower shields by walls of the at least two lower shields and the walls of the upper shield so as to fully enclose the additional cavity, wherein at least one of the electromagnetic shields has at least one projection therefrom that contacts and makes electrical connection with a surface of another electromagnetic shield when the shields are placed on the circuit board, wherein the upper and lower shields are removably clipped to the surface of the circuit board.