Design of a 2.4 GHz Elementary Resonator cell for Metamaterial-based Rectenna Design

The increasing demand for sustainable and wireless energy harvesting systems has led to significant interest in rectenna (rectifying antenna) technologies. This paper presents the design of a 2.4 GHz elementary metamaterial resonator unit cell intended for integration into a rectenna system. The work focuses on antenna-centric optimization, as suggested in prior reviews, emphasizing the development of a robust metamaterial structure to enhance gain, bandwidth, and electromagnetic field confinement. A systematic design approach is adopted, including microstrip antenna design, metamaterial unit cell synthesis, and integration strategies. Preliminary results demonstrate the feasibility of achieving resonance near the ISM band with improved electromagnetic characteristics. Future work includes array development and full rectenna integration.