An antenna structure for a contactless wearable structure having a plurality of antenna tracks on the substrate, the opposite ends of which are connectable to form an antenna when the substrate is bent, a plurality of capacitor elements on the substrate that are couplable to the antenna for adjusting the resonance frequency of the antenna, and at least one predefined separation region, by means of which it is possible to adjust which of the plurality of capacitor elements are electrically conductively connectable to the antenna when the substrate is bent, in order to form at least one capacitor with a predetermined total capacitance that is electrically conductively coupled to the antenna.