Electromagnetic Techniques and Design Strategies for FSS Structure Applications [Antenna Applications Corner]

Frequency-selective surfaces (FSSs) have a wide spectrum of applications in airborne platforms, wireless communication systems, medical imaging instruments, and high-power microwave systems. To employ finite, electrically large, and conformal FSSs for such applications, the development of an efficient electromagnetic (EM) design and analysis technique is essential, which is a challenging task in terms of computational complexity and requirements of highend computing platforms. In view of assessing the efficacies of various EM techniques for the design and analysis of FSS structures employed for planar and conformal surfaces, a brief review is presented here. Furthermore, the design strategies of novel FSS structures including metamaterial (MTM)-element FSSs are discussed for specific applications such as highperformance radomes, radar absorbing structures (RASs), and antennas. The complex issues associated with the EM design and analysis of FSS structures are also outlined for radomes, RAS, and antennas.