AbstractIn conjunction with a recent increase in information density, radio wave communication becomes more complex and more varied. Hence, effective use of radio wave resources is required. Under such a situation, the frequency‐selective screen (FSS) with which a single antenna is capable of receiving multifrequencies at the same time has drawn attention. The FSS consists of conductors placed periodically on a dielectric substrate.In this paper, the spectral domain moment method is applied to the problem of scattering from infinitely many conductors with arbitrary 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 incidences are discusse