Device, module and method for shared antenna operation in a RFID technology based communication environment

In general, the present invention relates to a systems, apparatuses and methods. The system comprises in principle a mobile terminal device and at least one smart memory module. The smart memory module comprises a RFID technology based communications circuitry. The mobile terminal device comprises an antenna circuitry, a RFID technology based communications circuitry, a smart memory module interface, and a radio frequency signal switch. The antenna circuitry is arranged to transmit and receive data carrying radio frequency (RF) signals to/from any counterpart device being equipped with a corresponding counterpart interface. The smart memory module interface is arranged to interface with at least one smart memory module when the smart memory module is present at the smart memory module interface. The radio frequency signal switch is operatively connected to the antenna circuitry. The radio frequency signal switch is further adapted to switch the antenna circuitry to be operatively connected with one of the RFID technology based communications circuitry of the terminal device and the RFID technology based communications circuitry of the smart memory module. Means for generating a switching signal are provided in order to control operation of the radio frequency signal switch. The switching signal is generated on the basis of at least criteria whether the smart memory module is present at the smart memory module interface.