An EAS (electronic article surveillance)-system comprising: an antenna assembly installed in a floor-, wall- or ceiling-structure, wherein said structure comprises a substructure and a covering and the antenna assembly is configured with thin film materials to have a total thickness such that the antenna assembly can be disposed between the substructure and the covering, wherein the antenna assembly comprises a transmitter antenna and a receiver antenna, the transmitter antenna being capable of exciting an EAS marker when connected to a transceiver of said EAS system and the receiver antenna being configured as a non-air core antenna, and wherein the antenna assembly comprises a base insulating layer, and an enclosure insulating layer, both made of thin film materials, wherein the base insulating layer comprises a common planar surface, wherein the transmitter antenna is at least partially disposed on the common planar surface of the base insulating layer, wherein the receiver antenna is configured as a non-air core receiver antenna including a wire loop at least partially coiled around at least one bar of magnetic material formed in a thin-film construction, wherein the receiver antenna is substantially disposed in an internal compartment one of (a) over the common planar surface of the base insulating layer and (b) within the base insulating layer, and wherein the enclosure insulating layer at least partially is disposed on the transmitter antenna and the receiver antenna, wherein the antenna assembly is housed within a housing assembly, the housing assembly configured with thin film materials such that both the housing assembly and the antenna assembly can be disposed between the substructure and the covering. an antenna assembly installed in a floor-, wall- or ceiling-structure, wherein said structure comprises a substructure and a covering and the antenna assembly is configured with thin film materials to have a total thickness such that the antenna assembly can be disposed between the substructure and the covering, wherein the antenna assembly comprises a transmitter antenna and a receiver antenna, the transmitter antenna being capable of exciting an EAS marker when connected to a transceiver of said EAS system and the receiver antenna being configured as a non-air core antenna, and wherein the antenna assembly comprises a base insulating layer, and an enclosure insulating layer, both made of thin film materials, wherein the base insulating layer comprises a common planar surface, wherein the transmitter antenna is at least partially disposed on the common planar surface of the base insulating layer, wherein the receiver antenna is configured as a non-air core receiver antenna including a wire loop at least partially coiled around at least one bar of magnetic material formed in a thin-film construction, wherein the receiver antenna is substantially disposed in an internal compartment one of (a) over the common planar surface of the base insulating layer and (b) within the base insulating layer, and wherein the enclosure insulating layer at least partially is disposed on the transmitter antenna and the receiver antenna, wherein the antenna assembly is housed within a housing assembly, the housing assembly configured with thin film materials such that both the housing assembly and the antenna assembly can be disposed between the substructure and the covering.