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Real-Time Near-Field mmWave Measurements Using Screen-Printed Metasurfaces and IR Camera

Lundgren, Johan LU ; Martin, Torleif LU ; Khalid, Hamza ; Zabihipour, Marzieh ; Tu, Deyu ; Engquist, Isak ; Sjoberg, Daniel LU orcid and Gustafsson, Mats LU orcid (2025) In IEEE Transactions on Antennas and Propagation 73(4). p.2232-2244
Abstract

This article elaborates on a technique for rapid real-time imaging of millimeter-wave (mmWave) power density over surfaces of several wavelengths in size. The approach involves using a screen-printed metasurface equipped with elements designed for absorption of mmWaves, along with an infrared (IR) camera to monitor temperature changes due to the absorption. By modulating the transmitted signal and applying the metasurface technique, which concentrates absorbed power onto specific regions, we successfully detected typical mmWave power levels. This method provides an efficient, noncontact means of rapidly evaluating and characterizing devices emitting in the mmWave spectrum. To illustrate the efficacy of the technique, we present two case... (More)

This article elaborates on a technique for rapid real-time imaging of millimeter-wave (mmWave) power density over surfaces of several wavelengths in size. The approach involves using a screen-printed metasurface equipped with elements designed for absorption of mmWaves, along with an infrared (IR) camera to monitor temperature changes due to the absorption. By modulating the transmitted signal and applying the metasurface technique, which concentrates absorbed power onto specific regions, we successfully detected typical mmWave power levels. This method provides an efficient, noncontact means of rapidly evaluating and characterizing devices emitting in the mmWave spectrum. To illustrate the efficacy of the technique, we present two case studies at 28 GHz: fault detection on a 256-element square array antenna in the Ka-band, and mmWave power density imaging in the near-field of a mobile phone mockup over surfaces measuring 58 square centimeters (51 square wavelengths at 28 GHz). The results obtained can be analyzed in both the time and frequency domains, augmenting comprehension and assessment capabilities.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Infrared (IR) camera, measurement, metasurface, millimeter-wave (mmWave), near-field measurements
in
IEEE Transactions on Antennas and Propagation
volume
73
issue
4
pages
13 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:105002695679
ISSN
0018-926X
DOI
10.1109/TAP.2025.3530763
language
English
LU publication?
yes
id
6156bcdc-8db4-4d20-8fb9-cc44f36978f0
date added to LUP
2025-08-28 11:36:32
date last changed
2025-08-28 11:37:10
@article{6156bcdc-8db4-4d20-8fb9-cc44f36978f0,
  abstract     = {{<p>This article elaborates on a technique for rapid real-time imaging of millimeter-wave (mmWave) power density over surfaces of several wavelengths in size. The approach involves using a screen-printed metasurface equipped with elements designed for absorption of mmWaves, along with an infrared (IR) camera to monitor temperature changes due to the absorption. By modulating the transmitted signal and applying the metasurface technique, which concentrates absorbed power onto specific regions, we successfully detected typical mmWave power levels. This method provides an efficient, noncontact means of rapidly evaluating and characterizing devices emitting in the mmWave spectrum. To illustrate the efficacy of the technique, we present two case studies at 28 GHz: fault detection on a 256-element square array antenna in the Ka-band, and mmWave power density imaging in the near-field of a mobile phone mockup over surfaces measuring 58 square centimeters (51 square wavelengths at 28 GHz). The results obtained can be analyzed in both the time and frequency domains, augmenting comprehension and assessment capabilities.</p>}},
  author       = {{Lundgren, Johan and Martin, Torleif and Khalid, Hamza and Zabihipour, Marzieh and Tu, Deyu and Engquist, Isak and Sjoberg, Daniel and Gustafsson, Mats}},
  issn         = {{0018-926X}},
  keywords     = {{Infrared (IR) camera; measurement; metasurface; millimeter-wave (mmWave); near-field measurements}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{2232--2244}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Antennas and Propagation}},
  title        = {{Real-Time Near-Field mmWave Measurements Using Screen-Printed Metasurfaces and IR Camera}},
  url          = {{http://dx.doi.org/10.1109/TAP.2025.3530763}},
  doi          = {{10.1109/TAP.2025.3530763}},
  volume       = {{73}},
  year         = {{2025}},
}