Multiple band antenna structures

Various antenna designs are presented that can be used to provide for wireless communication in electronic devices, such as wearable electronic devices. Various embodiments provide antenna structures and designs that can support multiple frequency bands in a relatively compact space. Various embodiments utilize a primary conductive ring embedded in the walls of the housing as antennas for various forms of wireless communication. The conductive ring includes a plurality of conductive elements separated from each other by portions of the housing, the plurality of conductive elements coupled respectively to the one or more signal sources on the PCB. Embodiments may additionally utilize a ground extension element positioned a distance away from the primary conductive ring in an opposite direction from the display module, in which the ground extension element is coupled to a ground connection of the PCB and boosting the antenna signal strength.