Radiation and Scattering Control of Antennas Through Self-Tuning Metasurfaces with Frequency-And Time-Domain Selective Properties

This paper presents a novel approach to enhancing the adaptability of wireless communication systems through the integration of self-reconfigurable metasurfaces with frequency- and time-domain selective properties. As wireless technologies such as IoT, 5G, and beyond 5G evolve, the demand for efficient use of frequency resources increases. Traditional antenna systems, with fixed-frequency responses, struggle to meet the dynamic needs of these environments. To address this, we introduce self-tuning metasurfaces that autonomously adjust their radiation and scattering characteristics based on the frequency and temporal properties of incoming signals. These metasurfaces, integrated with nonlinear circuits, offer significant improvements in applications like beam-steering, selective scattering, and filtering. We demonstrate this through three antenna configurations: a filtering aperture antenna, an invisible antenna with selective cloaking, and a beam-steering metasurface array. Our results show that this technology holds great promise for next-generation communication systems by enabling more flexible, efficient, and adaptable antenna designs.