Low Cost AoA Unit for IoT Applications

In this paper, we present a low cost Angle of Arrival (AoA) estimation unit that can be used as an Internet of Things (IoT) receiver and provides AoA estimations of the received signals. This AoA unit built based on converting multiple individual low cost Software Defined Radio (SDR) into a single SDR with multiple RF-channels. The proposed hardware has been tested in an anechoic chamber with an open source IoT standard. The experimental results show that the proposed AoA unit provides a very stable and accurate AoA estimations.