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Nonlinear Distortion Issues Created by Active Reconfigurable Intelligent Surfaces
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Communication Systems, CoS.ORCID iD: 0000-0002-1011-789X
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Communication Systems, CoS.ORCID iD: 0000-0002-5954-434x
2024 (English)In: 18th European Conference on Antennas and Propagation, EuCAP 2024, Institute of Electrical and Electronics Engineers (IEEE) , 2024Conference paper, Published paper (Refereed)
Abstract [en]

Reconfigurable intelligent surfaces (RISs) can improve the propagation conditions over wireless channels but a passively reflecting RIS must be large to be effective. Active RIS with amplifiers can deal with this issue. In this paper, we study the distortion created by nonlinear amplifiers in active RIS. We analytically obtain the directions of the reflected distortion when the desired signals arrive from specific azimuth and elevation angles. The results are demonstrated numerically and we conclude that nonlinearities can both create in-band and out-of-band distortion that is beamformed in entirely new directions.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2024.
Keywords [en]
nonlinear hardware, out-of-band distortion, Reconfigurable intelligent surfaces
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-350586DOI: 10.23919/EuCAP60739.2024.10501268ISI: 001215536201144Scopus ID: 2-s2.0-85184173296OAI: oai:DiVA.org:kth-350586DiVA, id: diva2:1884789
Conference
18th European Conference on Antennas and Propagation, EuCAP 2024, Glasgow, United Kingdom, Mar 17 2024 - Mar 22 2024
Note

Part of ISBN: 978-88-31299-09-1, 979-8-3503-9443-6

QC 20240930

Available from: 2024-07-18 Created: 2024-07-18 Last updated: 2024-09-30Bibliographically approved

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Kolomvakis, NikolaosBjörnson, Emil

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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