Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements

Ferhad Kasem; Gabriel Machado; Simon Cotton; Muhammad Ali Babar Abbasi; Dmitry Zelenchuk

doi:10.23919/EuCAP63536.2025.10999970

Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements

Ferhad Kasem, Gabriel Machado, Simon Cotton, Muhammad Ali Babar Abbasi, Dmitry Zelenchuk

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abstract

This paper summarises the design and channel measurements of a wide band Reconfigurable Intelligent Surface RIS operating within the millimeter wave spectrum for 5G and beyond communication. RIS elements are controlled by a p-i-n diode and biased via RF chokes operating within the n257 millimeter wave 5G band. The RIS operates in both vertical and horizontal polarizations. Experiments have been performed to validate the performance of the RIS in both near-field and far-field regions. It has been experimentally demonstrated that the proposed RIS can reflect incident beams towards desired locations with channel gain enhancement of up to 16.3 dB when appropriate phase profiles are applied.

Original language	English
Title of host publication	2025 19th European Conference on Antennas and Propagation (EuCAP)
Publisher	IEEE Xplore
Pages	1-5
Number of pages	5
ISBN (Electronic)	978-88-31299-10-7
ISBN (Print)	979-8-3503-6632-7
DOIs	https://doi.org/10.23919/EuCAP63536.2025.10999970
Publication status	Published online - 21 May 2025
Event	2025 19th European Conference on Antennas and Propagation (EuCAP) - Stockholm, Sweden Duration: 30 Mar 2025 → 4 Apr 2025

Conference

Conference	2025 19th European Conference on Antennas and Propagation (EuCAP)
Country/Territory	Sweden
City	Stockholm
Period	30/03/25 → 4/04/25

Bibliographical note

Publisher Copyright:
© 2025 European Association on Antennas and Propagation.

Funding

10.13039/100014013-UK Research and Innovation (Grant Number: 101096328

Keywords

Power measurement
Phase measurement
Beam steering
5G mobile communication
Millimeter wave measurements
Reconfigurable intelligent surfaces
Reflection
Millimeter wave communication
P-i-n diodes
Gain
5G
6G
beam steering
channel measurements
phase shift
p-i-n diodes
power spectrum
RIS
unit cell
varactors

Access to Document

10.23919/EuCAP63536.2025.10999970

EuCAP_2025_Camera_ReadyAuthor Accepted Manuscript, 6.44 MBLicence: CC BY-NC-ND

Cite this

Kasem, F., Machado, G., Cotton, S., Babar Abbasi, M. A., & Zelenchuk, D. (2025). Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements. In 2025 19th European Conference on Antennas and Propagation (EuCAP) (pp. 1-5). IEEE Xplore. Advance online publication. https://doi.org/10.23919/EuCAP63536.2025.10999970

@inproceedings{639de8053de2403dbf893da7cfc63763,

title = "Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements",

abstract = "This paper summarises the design and channel measurements of a wide band Reconfigurable Intelligent Surface RIS operating within the millimeter wave spectrum for 5G and beyond communication. RIS elements are controlled by a p-i-n diode and biased via RF chokes operating within the n257 millimeter wave 5G band. The RIS operates in both vertical and horizontal polarizations. Experiments have been performed to validate the performance of the RIS in both near-field and far-field regions. It has been experimentally demonstrated that the proposed RIS can reflect incident beams towards desired locations with channel gain enhancement of up to 16.3 dB when appropriate phase profiles are applied.",

keywords = "Power measurement, Phase measurement, Beam steering, 5G mobile communication, Millimeter wave measurements, Reconfigurable intelligent surfaces, Reflection, Millimeter wave communication, P-i-n diodes, Gain, 5G, 6G, beam steering, channel measurements, phase shift, p-i-n diodes, power spectrum, RIS, unit cell, varactors",

author = "Ferhad Kasem and Gabriel Machado and Simon Cotton and \{Babar Abbasi\}, \{Muhammad Ali\} and Dmitry Zelenchuk",

note = "Publisher Copyright: {\textcopyright} 2025 European Association on Antennas and Propagation.; 2025 19th European Conference on Antennas and Propagation (EuCAP) ; Conference date: 30-03-2025 Through 04-04-2025",

year = "2025",

month = may,

day = "21",

doi = "10.23919/EuCAP63536.2025.10999970",

language = "English",

isbn = "979-8-3503-6632-7",

pages = "1--5",

booktitle = "2025 19th European Conference on Antennas and Propagation (EuCAP)",

publisher = "IEEE Xplore",

address = "United States",

}

Kasem, F, Machado, G, Cotton, S, Babar Abbasi, MA & Zelenchuk, D 2025, Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements. in 2025 19th European Conference on Antennas and Propagation (EuCAP). IEEE Xplore, pp. 1-5, 2025 19th European Conference on Antennas and Propagation (EuCAP), Stockholm, Sweden, 30/03/25. https://doi.org/10.23919/EuCAP63536.2025.10999970

Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements. / Kasem, Ferhad; Machado, Gabriel; Cotton, Simon et al.
2025 19th European Conference on Antennas and Propagation (EuCAP). IEEE Xplore, 2025. p. 1-5.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements

AU - Kasem, Ferhad

AU - Machado, Gabriel

AU - Cotton, Simon

AU - Babar Abbasi, Muhammad Ali

AU - Zelenchuk, Dmitry

PY - 2025/5/21

Y1 - 2025/5/21

N2 - This paper summarises the design and channel measurements of a wide band Reconfigurable Intelligent Surface RIS operating within the millimeter wave spectrum for 5G and beyond communication. RIS elements are controlled by a p-i-n diode and biased via RF chokes operating within the n257 millimeter wave 5G band. The RIS operates in both vertical and horizontal polarizations. Experiments have been performed to validate the performance of the RIS in both near-field and far-field regions. It has been experimentally demonstrated that the proposed RIS can reflect incident beams towards desired locations with channel gain enhancement of up to 16.3 dB when appropriate phase profiles are applied.

AB - This paper summarises the design and channel measurements of a wide band Reconfigurable Intelligent Surface RIS operating within the millimeter wave spectrum for 5G and beyond communication. RIS elements are controlled by a p-i-n diode and biased via RF chokes operating within the n257 millimeter wave 5G band. The RIS operates in both vertical and horizontal polarizations. Experiments have been performed to validate the performance of the RIS in both near-field and far-field regions. It has been experimentally demonstrated that the proposed RIS can reflect incident beams towards desired locations with channel gain enhancement of up to 16.3 dB when appropriate phase profiles are applied.

KW - Power measurement

KW - Phase measurement

KW - Beam steering

KW - 5G mobile communication

KW - Millimeter wave measurements

KW - Reconfigurable intelligent surfaces

KW - Reflection

KW - Millimeter wave communication

KW - P-i-n diodes

KW - Gain

KW - 5G

KW - 6G

KW - beam steering

KW - channel measurements

KW - phase shift

KW - p-i-n diodes

KW - power spectrum

KW - RIS

KW - unit cell

KW - varactors

UR - https://pure.ulster.ac.uk/en/publications/639de805-3de2-403d-bf89-3da7cfc63763

UR - https://www.scopus.com/pages/publications/105007513040

U2 - 10.23919/EuCAP63536.2025.10999970

DO - 10.23919/EuCAP63536.2025.10999970

M3 - Conference contribution

SN - 979-8-3503-6632-7

SP - 1

EP - 5

BT - 2025 19th European Conference on Antennas and Propagation (EuCAP)

PB - IEEE Xplore

T2 - 2025 19th European Conference on Antennas and Propagation (EuCAP)

Y2 - 30 March 2025 through 4 April 2025

ER -

Experimental Verification of Broadband mmWave RIS-Aided Communications: Codebook-Based Beam Steering and Indoor Channel Measurements

Abstract

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Funding

Keywords

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