2.75-Bit Reflecting Unit Cell Design for Reconfigurable Intelligent Surfaces

Rains, J., Kazim, J. U. R. , Zhang, L. , Abbasi, Q. H. , Imran, M. A. and Tukmanov, A. (2021) 2.75-Bit Reflecting Unit Cell Design for Reconfigurable Intelligent Surfaces. In: 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, 04-10 Dec 2021, pp. 335-336. ISBN 9781728146706 (doi: 10.1109/APS/URSI47566.2021.9704689)

Abstract

This work proposes a phase-shifting unit cell for a reconfigurable intelligent surface capable of exhibiting 8 discrete phase states at 5G mid-band. An individually addressable unit cell embedded with 3 PIN diodes has been designed to provide enhanced phase resolution with a minimal number of active components. A particle swarm optimisation algorithm has been employed in order to maximise the phase state separation whilst minimising reflection loss and unit cell periodicity. Simulations are performed with extracted PIN diode and capacitor Sparameters for a realistic estimation of the fabricated device performance, with a resulting simulated average reflection loss of 1 dB and equivalent phase resolution of 2.75-bits.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Zhang, Professor Lei and Kazim, Mr Jalil and Tukmanov, Dr Anvar and Imran, Professor Muhammad and Rains, Mr James and Abbasi, Professor Qammer
• Authors: Rains, J., Kazim, J. U. R., Zhang, L., Abbasi, Q. H., Imran, M. A., and Tukmanov, A.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISBN: 9781728146706
• Published Online: 16 February 2022
• Copyright Holders: Copyright © 2021 The Authors
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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