SDR Analog Front-End Architecture For Simultaneous Digitalization of Data Transmission and Navigation Signals

In the last years, an increasing interest of the market in devices able to integrate navigation and communication technologies has been noticed. Software Defined Radio technology helps in a tight integration of all possible radio signals into one, completely reconfigurable, universal device. In this work the problem of the parallel acquisition and demodulation of Galileo, Satellite UMTS (S-UMTS) and IEEE 802.11b local wireless LAN has been faced through the usage of a multi-stage super-heterodyne analog front-end able to overlap the different signals into a reduced bandwidth. In this way it is possible the usage of low-cost components both for the analog heterodyne front and for the A/D Converter.