Computer Simulation of Modulated Frequency-Selective Surfaces on Mushroom-Shaped Metamaterials

This paper presents the results of computer simulation of modulated metasurfaces with mushroom-shaped unit cells. The metasurfaces were designed as a wide wall of a waveguide and as a part of microstrip transmission line. The combination of two types of unit cells that are identical in shape but different in size provides a synergy that allows creating frequency-selective devices with several stop-bands. The proposed devices were simulated using CST Studio Suite and Ansoft HFSS.