Design, Simulation, Fabrication and Determining the equivalent circuit Model of a Reconfigurable FSS unit cell filter for electromagnetic protection of space payload systems
In this article, a new type of EBG structure known as frequency selective surface (FSS) with reconfigurable capability is investigated. The proposed design introduces a new adjustable band stop filter equipped with PIN diodes. Operating frequency of the FSS structure is in the C-band and in the frequency range of 4GHz to 8GHz, which at the central frequency of 4.75GHz, provides a bandwidth of about 1 GHz, when the state of the diode being on. The center frequency of this filter is shifted to 5.23 GHz when the diode is off. In fact, this structure is supposed to be used as a type of electromagnetic coating filter for space payload in the next generation satellites. After the design and simulation of the final cell, an equivalent circuit model is also presented to confirm the design and simulation. These structures protect electronic modules of satellite payload against electromagnetic radiation, electronic warfare. The RCS reduction is the other application of the FSS structure.
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