A Modulator-less Beam Steering Transmitter based on a revised DDS-PLL Phase Shifter Architecture

Published online: Feb 8, 2018 Full Text: PDF (1.57 MiB) DOI: 10.24138/jcomss.v14i1.439
Cite this paper
Giulio D'Amato, Gianfranco Avitabile, Giuseppe Coviello, Claudio Talarico


This paper details the design and implementation of a modulator-less beam steering transmitter based on a revised DDS-PLL phase shifter architecture. The proposed topology targets low data rate communications for Internet-of-Things systems, and has been demonstrated using an FPGA evaluation board and a custom PCB with four PLLs centered at 2.453-GHz. Measured system performance for an experimental 32-kbps data rate achieved through a 16-PSK modulation scheme are discussed. The proposed architecture is frequency independent, can be used in multi-band devices and has the potential for being integrated as an RF System-on-Chip.


direct digital synthesizer (DDS), phase-locked loop (PLL), modulator-less, beam steering, polar transmitter, low data rate communications, Internet of Things (IoT).
Creative Commons License 4.0
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.