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

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Titel: Real-Time Near-Field mmWave Measurements Using Screen-Printed Metasurfaces and IR Camera
Autoren: Lundgren, Johan, Martin, Torleif, Khalid, Hamza, Zabihipour, Marzieh, Tu, Deyu, Engquist, Isak, Sjoberg, Daniel, Gustafsson, Mats
Weitere Verfasser: Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Electrical and Information Technology, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för elektro- och informationsteknik, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: AI and Digitalization, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: AI och digitalisering, Originator, Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Electrical and Information Technology, Electromagnetics and Nanoelectronics, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för elektro- och informationsteknik, Elektromagnetism och nanoelektronik, Originator, Lund University, Profile areas and other strong research environments, Strategic research areas (SRA), ELLIIT: the Linköping-Lund initiative on IT and mobile communication, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Strategiska forskningsområden (SFO), ELLIIT: the Linköping-Lund initiative on IT and mobile communication, Originator, Lund University, Profile areas and other strong research environments, Lund University Profile areas, LU Profile Area: Light and Materials, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Lunds universitets profilområden, LU profilområde: Ljus och material, Originator
Quelle: IEEE Transactions on Antennas and Propagation. 73(4):2232-2244
Schlagwörter: Engineering and Technology, Electrical Engineering, Electronic Engineering, Information Engineering, Other Electrical Engineering, Teknik, Elektroteknik och elektronik, Annan elektroteknik och elektronik
Beschreibung: 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.
Zugangs-URL: https://doi.org/10.1109/TAP.2025.3530763
Datenbank: SwePub
Beschreibung
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 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.
ISSN:0018926X
15582221
DOI:10.1109/TAP.2025.3530763