Research Projects

The proposed project addresses a critical need in the current landscape of wireless and navigation technologies by introducing an iFSS capable of reconfigurable filtering and environmental adaptability. Traditional FSS are typically passive and designed for fixed frequency operations, which limits their usefulness in dynamic and interference-prone environments such as urban areas, indoor settings, and military zones. Although recent advancements have introduced reconfigurable FSS structures using components like PIN diodes, varactors and MEMS, these implementations often rely on manual control or pre-programmed switching and do not respond intelligently to environmental changes. In the context of navigation systems, particularly those based on satellite signals such as IRNSS, GPS or GNSS, maintaining signal integrity in the presence of jamming, multipath reflections, or signal blockage is a major challenge. The proposed iFSS aims to overcome these limitations by integrating real-time sensing and control mechanisms into the FSS structure. This will enable the surface to adapt its electromagnetic behaviour dynamically, such as altering transmission or reflection characteristics based on the surrounding signal environment. Such intelligent adaptability aligns with emerging trends in electromagnetic systems, including cognitive radios and reconfigurable intelligent surfaces (RIS), both of which are anticipated to play a key role in future 6G communications and beyond. By providing selective filtering, directional response control, and interference mitigation capabilities, the iFSS can significantly enhance the robustness and reliability of navigation systems. The objective of the project is to satisfy the demand of navigation system in L-Band (1000 – 2000 MHz) and S-band (2483.5–2500 MHz).