journal article·2024-02Open access

New Approach to Designing Functional Materials for Stealth Technology: Radar Experiment with Bilayer Absorbers and Optimization of the Reflection Loss

Jaume Calvo‐de la Rosa, Aleix Bou‐Comas, Joan Manel Hernàndez, Pilar Marín, Jose Maria Lopez‐Villegas, Javier Tejada, Eugene M. Chudnovsky

Advanced Functional Materials· Volume 34· Issue 6

Abstract

Abstract Microwave power absorption by a two‐layer system deposited on a metallic surface is studied in the experimental setup emulating the response to a radar signal. Layers containing hexaferrite and iron powder in a dried paint of thickness under 1 mm are used. The data is analyzed within a theoretical model derived for a bilayer system from the transmission line theory. A good agreement between experimental and theoretical results is found. The advantage of using a bilayer system over a single‐layer system is demonstrated. How the maximum microwave absorption (minimum reflection) can be achieved through the optimization of the filling factors and thicknesses of the two layers is shown.
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Research context

OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications

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Affiliations

Departament de Física de la Matèria Condensada Universitat de Barcelona Martí i Franquès 1 Barcelona 08028 Spain

Institut de Nanociència i Nanotecnologia (IN2UB) Universitat de Barcelona Barcelona 08028 Spain

Graduate Program in Physics and Initiative for the Theoretical Sciences Graduate Center The City University of New York New York NY 10016 USA

Instituto de Magnetismo Aplicado (IMA‐UCM‐ADIF) Madrid 28230 Spain

Departamento de Física de Materiales Facultad de Físicas Universidad Complutense de Madrid (UCM) Madrid 28040 Spain

Departament d'Enginyeria Electrònica i Biomèdica Universitat de Barcelona Barcelona 08028 Spain

Department of Physics and Astronomy Herbert H. Lehman College The City University of New York Bronx NY 10468‐1589 USA

Funding

Air Force Office of Scientific Research

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