Work

Synthesis of Passively Loaded Reflectarrays for Perfect Anomalous Deflection

Year: 2025

Type: conference-paper

Abstract: Achieving wide-angle beam steering without parasitic scattering is essential for large-scale passive anomalous reflectarrays in RIS applications. This talk presents a novel design methodology for planar antenna arrays using reactive loads to enable efficient, tunable anomalous reflection. Unlike conventional reflectarrays, the technique allows efficient extremeangle beam steering while minimizing undesired scattering by accurately optimizing sub-wavelength current distributions. Each meta-atom, equipped with a tunable bulk component (e.g., capacitor), is treated as a linear multi-port network, allowing algebraic load optimization. The results pave the way for scalable, reconfigurable reflectarrays for next-generation wireless architectures.

Source: International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

DOI: 10.1109/irmmw-thz61557.2025.11320007

Authors: Sravan K. R. Vuyyuru, Risto Valkonen, Viktar S. Asadchy, Do-Hoon Kwon, Sergei A. Tretyakov

Institutions: Aalto University, Nokia (Finland), University of Massachusetts Amherst

Language: English

Topic: Advanced Antenna and Metasurface Technologies

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Funders: European Commission, Nokia Foundation, HPY Research Foundation

Awards: G434337789, Future Wireless Communications Empowered by Reconfigurable Intelligent Meta-Materials (META WIRELESS)