Periodical electromagnetic structures

Frequency Selective Surfaces (FSSs) as well as Electromagnetic Band-Gap (EBG) materials are periodic electromagnetic structures. FSSs are characterised by frequency selectivity properties of electromagnetic radiated fields. EBG structures fall in the general category of artificial materials where the electromagnetic characteristic of dielectric substrates is modified by periodically loading the material with metallic or dielectric elements. EBG materials allow the control and guidance of surface waves in dielectric substrates.

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