G. D'Amato, G. Avitabile, G. Coviello, C. Talarico
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An FPGA-based beam steering transceiver prototype for narrowband IoT communications
This work presents the design and implementation of a beam steering transceiver prototype targeting narrowband IoT communications. The proposed architecture, integrating an open-source 8051 processor IP-core and a revised 4-channel DDS-PLL phase shifter, has been validated using an FPGA evaluation board, a custom PCB with four PLLs centered at 2.453-GHz and a custom frontend board for signal up- and down-conversion as well as actual transmission and reception through antennas.