Abstract: An EAS antenna having uniform antenna thickness along the antenna height is provided. The antenna is contains at least two overlapping coils where the individual coil cross-sections are variable with respect to the circumference. If the individual coil thickness is halved at the overlap, the antenna will have uniform thickness along the antenna height. This is accomplished by reducing the number of wire turns per layer along one or more sections of the coil, and simultaneously increasing the number of wire layers on the same sections.

Abstract: An acousto-magnetic electronic article surveillance antenna is provided that attaches directly to a vertical structure with the electromagnetic field projected across an opening, such as an exit or entrance to a building or other defined area. The vertical structure could be a doorframe or wall, constructed from a wide variety of materials, including metal, wood, glass, concrete or gypsum wallboard. The antenna geometry is elongated vertically to allow a corresponding decrease in width projected from the vertical structure, thereby reducing the apparent size of the antenna and providing a near-concealed appearance and protection form physical damage.