The optimum values of the variables are determined by using multi-objective optimization. The transmission coefficient calculation is carried out with a newly introduced formulation. Then, the reflection and transmission coefficients of the whole structure are expressed as the functions of all variables in the rasorber. Firstly, using computer simulation results, predetermined value sets of equivalent circuit elements of the impedance of a frequency selective surface (FSS) are obtained depending on the dimensions in a unit cell. This structure is easy to manufacture as the absorption and frequency selectivity are achieved only by resistive and conductive square patch elements integrated into the dielectric layers. With high physical protection and wide absorption band, this proposed rasorber is suitable for stealthy antenna radomes. In this work, unlike conventional ones, an optimum rasorber was designed which does not require circuit elements loaded by soldering.
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