A multiband fractal antenna array to software defined radio

The software defined radio has been studied as a solution for the integration of the futures 4G systems and of the several air interfaces existent in the battlefield, in the military middle. The digitization of the signal still in the RF stage will allow that all of the functions of the radio are implemented in software. However, for this to be possible, it is necessary to have a multiband antenna, so small as possible, in way to allow the reception of several simultaneously modes. Such antenna can be used to form an array. This article intends to propose a particular solution for multiband antennas to be used in a particular SDR system.