Transmitting phase-aligned signals for array steering with USRPs X310
More affordable commercial systems and high reconfigurability have made Software-Defined Radios (SDR) a serious candidate for many complex radio systems. This work is part of a study that investigates the usability of the commercial Universal Software Radio Peripheral (USRP) for antenna array steering applications, which require all signals to be phase synchronized. The following details the specific problems met when the steered array transmits signals, draws the comparison with the previous work that focused
on steering a receiving array, and presents the proposed solution to automate phase synchronization between the different transmitting channels. The radiation patterns of two four-element
Uniform Linear Arrays (ULA) are measured after calibration as a result.
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