Single element antenna structure with high isolation

Disclosed is an antenna structure for transmitting and receiving electromagnetic signals, in particular for mobile telecommunication using the GSM Standard. The antenna structure allows for decoupling between the transmission path and reception path. The antenna structure has two preferably perpendicular couplings with two separate ports, for example for the connection of a transmitting device and a receiving device. Furthermore, the impedances of the two couplings can advantageously be matched, independently of one another, to the transmitting device and receiving device and/or the frequency bands of the signals to be transmitted or received.