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In this paper, a liquid crystal tunable frequency selective surface (FSS) in S-band is proposed. The relative permittivity of liquid crystal can be changed from 2.5 to 3.3, with the change of bias voltage applied to it. In that way, the FSS proposed in the paper has a tunable feature. The full-wave simulation of the tunable FSS is carried out in the paper and the equivalent circuit model (ECM) is...
This research proposes to utilize square-loop frequency selective surface (FSS) in a radar station to increase the efficiency of communication systems and in the same time protect the staff and people against biological effects of C-band microwave radiation. In a radar station, waves propagate in undetermined directions and different frequency ranges which can effect on health of staff and people...
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