A window assembly comprising: a substrate; a transparent layer disposed on the substrate and defining an area having a periphery and with the transparent layer comprising a metal compound such that the transparent layer is electrically conductive; an outer region devoid of the transparent layer defined adjacent the transparent layer along the periphery; a conductive element disposed on the substrate and comprising: a first portion overlapping the area of the transparent layer and abutting and being in direct electrical contact with the transparent layer; and a second portion integrally extending from the first portion and disposed in the outer region such that the periphery delineates the first portion from the second portion, and wherein the second portion has an area defining an enclosed slot, and wherein the second portion comprises an edge wherein the edge defines a first groove and a second groove spaced apart from one another and being disposed on opposing sides of the enclosed slot; and a feeding element coupled to the conductive element and being configured to energize the conductive element to implement the enclosed slot as a slot antenna; and an energizing element coupled to the conductive element and being configured to energize the conductive element to implement the conductive element as a bus bar wherein the bus bar is configured to transfer energy to the transparent layer to heat the transparent layer. a substrate; a transparent layer disposed on the substrate and defining an area having a periphery and with the transparent layer comprising a metal compound such that the transparent layer is electrically conductive; an outer region devoid of the transparent layer defined adjacent the transparent layer along the periphery; a conductive element disposed on the substrate and comprising: a first portion overlapping the area of the transparent layer and abutting and being in direct electrical contact with the transparent layer; and a second portion integrally extending from the first portion and disposed in the outer region such that the periphery delineates the first portion from the second portion, and wherein the second portion has an area defining an enclosed slot, and wherein the second portion comprises an edge wherein the edge defines a first groove and a second groove spaced apart from one another and being disposed on opposing sides of the enclosed slot; and a first portion overlapping the area of the transparent layer and abutting and being in direct electrical contact with the transparent layer; and a second portion integrally extending from the first portion and disposed in the outer region such that the periphery delineates the first portion from the second portion, and wherein the second portion has an area defining an enclosed slot, and wherein the second portion comprises an edge wherein the edge defines a first groove and a second groove spaced apart from one another and being disposed on opposing sides of the enclosed slot; and a feeding element coupled to the conductive element and being configured to energize the conductive element to implement the enclosed slot as a slot antenna; and an energizing element coupled to the conductive element and being configured to energize the conductive element to implement the conductive element as a bus bar wherein the bus bar is configured to transfer energy to the transparent layer to heat the transparent layer.