A 73 GHz time modulated array with beam steering and direct vector modulation of QPSK / 8PSK / 16QAM

Ball, E.A. orcid.org/0000-0002-6283-5949 and Joseph, S.D. (2025) A 73 GHz time modulated array with beam steering and direct vector modulation of QPSK / 8PSK / 16QAM. In: 2025 IEEE International Mediterranean Conference on Communications and Networking (MeditCom). 2025 IEEE International Mediterranean Conference on Communications and Networking (MeditCom), 07-10 Jul 2025, Nice, France. Institute of Electrical and Electronics Engineers (IEEE), pp. 1-5. ISBN: 9798331529666.

Abstract

We demonstrate the first use of a Time Modulated Array (TMA) steerable phased array at 73 GHz with data symbol vector modulation applied directly by the TMA. The concept removes the need for data modulation to be applied in earlier RF stages. Only TMA digital control waveforms are used, to both steer the beam and apply symbol modulation. Laboratory demonstration results using a custom 73 GHz hardware prototype show QPSK, 8PSK and 16QAM constellations are obtained as expected. Laboratory measured Error Vector Magnitude (EVM) ranges from 7.1% to 11%.

Metadata

Item Type:	Proceedings Paper
Authors/Creators:	Ball, E.A. https://orcid.org/0000-0002-6283-5949 Joseph, S.D.
Copyright, Publisher and Additional Information:	© 2025 The Author(s). Except as otherwise noted, this author-accepted version of a paper published in 2025 IEEE International Mediterranean Conference on Communications and Networking (MeditCom) is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/
Keywords:	time modulated arrays; antennas; millimetre wave circuits; modulation
Dates:	Accepted: 12 May 2025 Published (online): 1 September 2025 Published: 1 September 2025
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > School of Electrical and Electronic Engineering
Funding Information:	Funder Grant number UK Research and Innovation MR/T043164/1
Depositing User:	Symplectic Sheffield
Date Deposited:	20 Jun 2025 09:02
Last Modified:	08 Sep 2025 15:43
Status:	Published
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
Refereed:	Yes
Identification Number:	10.1109/MeditCom64437.2025.11104265
Related URLs:	Conference
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:228083

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A 73 GHz time modulated array with beam steering and direct vector modulation of QPSK / 8PSK / 16QAM

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