In this contribution we propose the design of an inductive Frequency Selective Surface (FSS) with double resonant elements aimed at the achievement of a simple well-performing, dielectric-free, space filter screen able to separate the Ku band from the Ka band. The FSS performance is compared to that of a typical double ring FSS which major drawback is the use of a dielectric substrate that leads to unavoidable additional transmission losses and makes the dichroic mirror more complex with respect to a simple single perforated screen. For all applications in which the FSS is asked to be as simple as possible and the transmission losses specifications are severe, the Inductive FSS Double Resonant Elements here proposed turns out to be an interesting alternative to typical Double Ring FSS.
2. Munk, B. A., Finite Arrays and FSS, Wiley-Interscience, New York, 2003.
3. Schennum, G. H., "Frequency selective surfaces for multiple frequency antennas," Microwave Journal, Vol. 16, 55-57, 1973.
4. Huang, J., T. Wu, and S. Lee, "Tri-band FSS with circular ring elements," IEEE Trans. Antennas Propagation, Vol. 42, No. 2, 166-175, 1994.
5. Wu, T. K. and S. Lee, "Multiband frequency selective surface with multiring patch elements," IEEE Trans. Antennas Propagation, Vol. 42, No. 11, 1484-1490, 1994.
6. Wu, T. K., "Single screen triband FSS with double square loop elements," Microwave and Optical Tech. Lett., Vol. 5, No. 2, 56-59, 1992.
7. Luol, X. F., P. T. Teo, A. Qing, and C. K. Lee, "Design of double square loop frequency selective surfaces using differential evolution strategy coupled with equivalent circuit model," Microwave and Optical Tech. Lett., Vol. 44, No. 2, 94-97, 2005.
8. Orfanidis, S. J., Electromagnetic Waves and Antennas, Rutgers University, 2008.
9. Teo, P. T., X. F., Luo, and C. K. Lee, "Frequency selective surfaces for GPS and DCS 1800 mobile communication, Part 1: Quad-layer and single-layer FSS desig," IET Microw. Antennas Propag., Vol. 1, 314-321, 2007.
10. Guo, C., H. Sun, and X. Lu, "A novel dualband frequency selective surfaces with periodic cell perturbation," Progress In Electromagnetics Research B, Vol. 9, 137-149, 2008.