Registration sensitivity study of double-layer FSS design for radome

Registration sensitivity study of double-layer cross FSS and 4-legged slot FSS designed for FSS radome was conducted in this paper. Transmission properties, from aligned structure to misaligned structure of half periodicity of unit cell between FSS layers, were discussed. Transmission properties such as center frequency, 3-dB bandwidth and specific characteristic of each misaligned double layer FSS are shown in the paper. The results show that each FSS structure had maximum center frequency transition of 2 GHz and 1.2 GHz and also bandwidth showed change.