Dual-Frequency Metasurface Antenna for Earth Science Remote Sensing

This paper presents an innovative approach to designing dual-frequency Metasurface (MTS) antennas. These antennas cater to the growing demand for multifrequency capabilities in applications like Earth science, satellite communications, and remote sensing. Traditional multifrequency antenna designs have limitations, often requiring external feeds. The paper outlines the foundational principles of single-layer, single frequency MTS antenna design and expands upon them to introduce a dual-band, dual-layered antenna configuration. The proposed design leverages Foster's reactance theorem to enable independent operation of two patterned metallic sheet at two widely separated frequencies with coplanar excitation. Simulation results demonstrate the antenna's performance, not only in broadside operation but also at various pointing angles. This approach offers a promising solution for compact multifrequency antennas in space-constrained applications, addressing the needs of modern communication systems.