Application of Digital Beamforming to Software Defined Radio 5G/Radar Systems

This paper presents a flexible phased array system designed at 28 GHz, for Radar and 5G applications, combining the use of software defined radio with GNU radio. The amplitude and phase of the signals that feed the antennas are digitally controlled using an application developed in the GNU Radio. The developed setup uses a USRP N310 to produce Intermediate frequency signals and RF frontend conversion modules combined with a 28 GHz antenna array prototype. The amplitudes of the received signals using beamforming were measured, revealing a good correspondence of the radiation peaks with the desired angle, demonstrating the adequate operation of the system.