Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results

Hamed Radpour; Markus Hofer; Lukas Walter Mayer; Andreas Hofmann; Martin Schiefer; Thomas Zemen

doi:10.1109/WCNC57260.2024.10571022

Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results

Hamed Radpour (Author and Speaker)
, Markus Hofer
, Lukas Walter Mayer
, Andreas Hofmann
, Martin Schiefer
, Thomas Zemen

Siemens AG Österreich

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Oral Presentation › peer-review

Abstract

Reconfigurable intelligent surfaces (RISs) will play
a key role to establish reliable low-latency millimeter wave
(mmWave) communication links for indoor automation and
control applications. In case of a blocked line-of-sight between
the base station (BS) and the user equipment (UE), a RIS
mounted on a wall or on a ceiling enables a bypass for the
radio communication link. In this work, we present an active
RIS for the mmWave frequency band. Each RIS element uses a
field effect transistor (FET) to amplify the reflected signal and an
orthogonal polarization transformation to increase the isolation
between impinging and reflected radio wave. By switching the
bias voltage at gate and drain of the FET we can establish four
states for each RIS element: two reflection states with different
phase shifts, an active amplification and an off state. We present
results of the active RIS with 37 patch antenna elements arranged
in a hexagonal grid for a center frequency of 25.8 GHz. The RIS
field patterns obtained by numerical simulations and by empirical
measurements in an anechoic chamber are compared. They show
a good match and the received power is improved by 12 dB in
the active mode of the RIS compared to the reflective mode.

Original language	English
Title of host publication	IEEE Wireless Communications and Networking Conference (WCNC)
Place of Publication	Dubai, UAE
Number of pages	6
ISBN (Electronic)	979-8-3503-0358-2
DOIs	https://doi.org/10.1109/WCNC57260.2024.10571022
Publication status	Published - 1 Apr 2024
Event	IEEE Wireless Communications and Networking Conference 2024 - Dubai, Dubai, United Arab Emirates Duration: 21 Apr 2024 → 24 Apr 2024

Conference

Conference	IEEE Wireless Communications and Networking Conference 2024
Abbreviated title	IEEE WCNC 2024
Country/Territory	United Arab Emirates
City	Dubai
Period	21/04/24 → 24/04/24

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Research Field

Former Research Field - Enabling Digital Technologies

Keywords

Reconfigurable intelligent surface (RIS)
6G
mmWave

Access to Document

10.1109/WCNC57260.2024.10571022

http://arxiv.org/abs/2306.04515

Cite this

@inproceedings{99b656ba3a614fa084995fbaf0392a30,

title = "Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results",

abstract = "Reconfigurable intelligent surfaces (RISs) will play a key role to establish reliable low-latency millimeter wave (mmWave) communication links for indoor automation and control applications. In case of a blocked line-of-sight between the base station (BS) and the user equipment (UE), a RIS mounted on a wall or on a ceiling enables a bypass for the radio communication link. In this work, we present an active RIS for the mmWave frequency band. Each RIS element uses a field effect transistor (FET) to amplify the reflected signal and an orthogonal polarization transformation to increase the isolation between impinging and reflected radio wave. By switching the bias voltage at gate and drain of the FET we can establish four states for each RIS element: two reflection states with different phase shifts, an active amplification and an off state. We present results of the active RIS with 37 patch antenna elements arranged in a hexagonal grid for a center frequency of 25.8 GHz. The RIS field patterns obtained by numerical simulations and by empirical measurements in an anechoic chamber are compared. They show a good match and the received power is improved by 12 dB in the active mode of the RIS compared to the reflective mode.",

keywords = "Reconfigurable intelligent surface (RIS), 6G, mmWave",

author = "Hamed Radpour and Markus Hofer and Mayer, \{Lukas Walter\} and Andreas Hofmann and Martin Schiefer and Thomas Zemen",

year = "2024",

month = apr,

day = "1",

doi = "10.1109/WCNC57260.2024.10571022",

language = "English",

isbn = "979-8-3503-0359-9",

booktitle = "IEEE Wireless Communications and Networking Conference (WCNC)",

note = " IEEE Wireless Communications and Networking Conference 2024 , IEEE WCNC 2024 ; Conference date: 21-04-2024 Through 24-04-2024",

}

Radpour, H , Hofer, M, Mayer, LW, Hofmann, A, Schiefer, M & Zemen, T 2024, Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results. in IEEE Wireless Communications and Networking Conference (WCNC). Dubai, UAE, IEEE Wireless Communications and Networking Conference 2024 , Dubai, United Arab Emirates, 21/04/24. https://doi.org/10.1109/WCNC57260.2024.10571022

Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results. / Radpour, Hamed (Author and Speaker); Hofer, Markus; Mayer, Lukas Walter et al.
IEEE Wireless Communications and Networking Conference (WCNC). Dubai, UAE, 2024.

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Oral Presentation › peer-review

TY - GEN

T1 - Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results

AU - Hofer, Markus

AU - Mayer, Lukas Walter

AU - Hofmann, Andreas

AU - Schiefer, Martin

AU - Zemen, Thomas

A2 - Radpour, Hamed

PY - 2024/4/1

Y1 - 2024/4/1

N2 - Reconfigurable intelligent surfaces (RISs) will play a key role to establish reliable low-latency millimeter wave (mmWave) communication links for indoor automation and control applications. In case of a blocked line-of-sight between the base station (BS) and the user equipment (UE), a RIS mounted on a wall or on a ceiling enables a bypass for the radio communication link. In this work, we present an active RIS for the mmWave frequency band. Each RIS element uses a field effect transistor (FET) to amplify the reflected signal and an orthogonal polarization transformation to increase the isolation between impinging and reflected radio wave. By switching the bias voltage at gate and drain of the FET we can establish four states for each RIS element: two reflection states with different phase shifts, an active amplification and an off state. We present results of the active RIS with 37 patch antenna elements arranged in a hexagonal grid for a center frequency of 25.8 GHz. The RIS field patterns obtained by numerical simulations and by empirical measurements in an anechoic chamber are compared. They show a good match and the received power is improved by 12 dB in the active mode of the RIS compared to the reflective mode.

AB - Reconfigurable intelligent surfaces (RISs) will play a key role to establish reliable low-latency millimeter wave (mmWave) communication links for indoor automation and control applications. In case of a blocked line-of-sight between the base station (BS) and the user equipment (UE), a RIS mounted on a wall or on a ceiling enables a bypass for the radio communication link. In this work, we present an active RIS for the mmWave frequency band. Each RIS element uses a field effect transistor (FET) to amplify the reflected signal and an orthogonal polarization transformation to increase the isolation between impinging and reflected radio wave. By switching the bias voltage at gate and drain of the FET we can establish four states for each RIS element: two reflection states with different phase shifts, an active amplification and an off state. We present results of the active RIS with 37 patch antenna elements arranged in a hexagonal grid for a center frequency of 25.8 GHz. The RIS field patterns obtained by numerical simulations and by empirical measurements in an anechoic chamber are compared. They show a good match and the received power is improved by 12 dB in the active mode of the RIS compared to the reflective mode.

KW - Reconfigurable intelligent surface (RIS)

KW - 6G

KW - mmWave

U2 - 10.1109/WCNC57260.2024.10571022

DO - 10.1109/WCNC57260.2024.10571022

M3 - Conference Proceedings with Oral Presentation

SN - 979-8-3503-0359-9

BT - IEEE Wireless Communications and Networking Conference (WCNC)

CY - Dubai, UAE

T2 - IEEE Wireless Communications and Networking Conference 2024

Y2 - 21 April 2024 through 24 April 2024

ER -

Active reconfigurable intelligent surface for the millimeter-wave frequency band: Design and measurement results

Abstract

Conference

UN SDGs

Research Field

Keywords

Access to Document

Fingerprint

Cite this