A ground shield is disclosed that includes a `cheesed` metal positioned
within a dielectric layer and a metal region positioned within a first
metal level over the cheesed metal. The ground shield can have different
forms depending on the metal used, and provisions are made to prevent
diffusion of copper (Cu) when that is used as the metal in the cheese
metal of the ground shield. The ground shield provides a low sheet
resistance, very thick metal at a first metal (M1) level for passive RF
elements in conjunction with the standard back-end-of-line (BEOL)
integration. The invention also includes a method of forming the ground
shield.