Abstract A novel tunable triple stop band frequency selective surface (FSS) is designed and integrated with the multiple inputs outputs (MIMO) antenna as an isolation structure to verify its validity. The proposed FSS renders excellent characteristics for reported MIMO system which verified from ECC DG plot. In FSS, graphene materials are attached at end of three stubs realize tuning over respe...

In this communication, a wideband reconfigurable reflectarray based on reflector-backed active second-order bandpass frequency selective surface (FSS) is presented. The reflector composed of periodic short-circuited parallel plate waveguide (PPW) and the FSS stacked non-resonant metallic elements separated by thin dielectric substrates. By integrating microwave varactors in capacitive layers FS...