SCATTERING FROM A PERIODIC ARRAY OF ARBITRARY SHAPED ELEMENTS ON A SEMIINFINITE SUBSTRATE

In conjunction with a recent increase in information density, radio wa ve communication becomes more complex and more varied. Hence, effectiv e use of radio wave resources is required. Under such a situation, the frequency-selective screen (FSS) with which a single antenna is capab le of receiving multifrequencies at the same time has drawn attention. The FSS consists of conductors placed periodically on a dielectric su bstrate. In this paper, the spectral domain moment method is applied t o the problem of scattering from infinitely many conductors with arbit rary shaped elements on a semiinfinite dielectric substrate. From the results, the effect of the surface resistance of the conductor and the characteristics due to the conductor shape are investigated. Various scattering characteristics by linearly and circularly polarized incide nces are discussed.