Investigation of Dual-Band Conformal Frequency Selective Surfaces for Radome Applications

Abstract

The design of frequency selective surfaces is critical to electromagnetic wave control and communication systems. The urgent need for advanced FSS designs is addressed in this study, with a particular emphasis on attaining band-stop behavior in the fundamental X- and C-band frequencies. This research not only advances FSS technology but also addresses current issues with performance improvement in dual frequency bands. The complexity of achieving band-stop characteristics in both C-and X-bands postures a significant challenge in FSS design. Another level of complexity is added by realizing the effects of conformal configurations like concave and convex bending. This study explores these issues and offers a methodical strategy for resolving them. The unit cell is carefully analyzed at the outset of the study in order to optimize its properties for band-stop behavior in the C-and X-bands. To ensure reliable performance, the unit cell's stability in the TE and TM modes is also thoroughly examined. The design options are further expanded by investigating conformal arrangements, such as hemispherical and conical geometries. The simulation model, implemented through CST Microwave Studio, serves as a powerful tool in comprehending these complex designs. The different characteristics and benefits of the conformal design are emphasized by a comparison of the conformal and planar FSS setups. The study offers a thorough understanding of how the conformal FSS behaves in both frequency ranges. The results offer a basis for comprehending the usefulness and benefits of the suggested design. The results of this study have important implications for the creation of flexible and effective FSS designs for band-stop uses in the Cand X-bands. The study opens the door for real-world applications while also adding to academic understanding by bridging the gap between simulation and actual implementation. The conformal FSS prototype's integration with a Radome was validated by experimental measurements, hence ensuring the design's applicability and dependability in real-world situations.