A novel design methodology for bandpass frequency selective surfaces using complementary loading structure

In this paper, a new design methodology for bandpass frequency selective surfaces (FSSs) using complementary loading structure is introduced. The structure is achieved by cascading two Jerusalem aperture screens and a Jerusalem patch screen which are backed by three layers of dielectric slabs. The effect to the transmission characteristics of the Jerusalem patch screen as the load of the two Jerusalem aperture screens is investigated. The designed FSS unit cell has a periodicity and thickness about quarter of a wavelength and half a wavelength respectively, and at the same time the transmission coefficients meet the requirements even when the incidence angle is up to 80o. This novel design methodology provides a new design parameter for tailoring the response of the FSS and has proved effectivity in designing high performance FSS.