Design of a Mechanically RIS Unit Cell with Prephased States at 26 GHz

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URI: https://hdl.handle.net/10481/111107
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Author
Baena-Molina, Marcos; Palomares-Caballero, Ángel; Padilla, Pablo; Valenzuela-Valdés, Juan F.
Editorial
European Conference Antennas and Propagation (EurAAP)
Materia
Mechanical reconfiguration
 
millimeter-wave frequencies
 
reconfigurable intelligent surface (RIS)
 
unit cell
 
Date
2025-05-21
Referencia bibliográfica
M. Baena-Molina, Á. Palomares-Caballero, P. Padilla and J. F. Valenzuela-Valdés, "Design of a Mechanically RIS Unit Cell with Prephased States at 26 GHz," 2025 19th European Conference on Antennas and Propagation (EuCAP), Stockholm, Sweden, 2025, pp. 1-4, doi: 10.23919/EuCAP63536.2025.10999514.
Sponsorship
- Department of Signal Theory, Telematics and Communications, Centre for Information and Communication Technologies (CITIC-UGR), University of Granada, 18071 Granada, Spain. - Institut d’Electronique et des Technologies du numéRique (IETR), UMR CNRS 6164, INSA Rennes, France.
Abstract
A prephased 1-bit mechanically reconfigurable unit cell for a reconfigurable intelligent surfaces (RIS) is presented. In the proposed RIS unit cell design, a geometric translation of the element has been implemented, obtaining two different pairs of RIS unit cell each with a 1-bit mechanical reconfiguration. The electromagnetic (EM) behavior is analyzed using the reflection coefficient for normal and oblique incidence, demonstrating its suitable operation in the n258 band of 5G. A 10 × 10 mechanically RIS is designed using the two pairs of unit cells and its radiation performance is compared to a conventional 1-bit RIS at 26 GHz. It is shown how a 1-bit configuration with pseudo-randomization for mechanically RIS enhances the radiation pattern performance while maintaining the simplicity of 1-bit reconfiguration.
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