Novel element of frequency selective surfaces based on dipole patch element

In this paper a novel Frequency Selective Surface (FSS) is designed by improving the traditional FSS of dipole patches. By applying the mode matching method, these two FSS structures with traditional element and novel one are calculated and analyzed theoretically. The influence on the resonant frequency and the reflection coefficient at resonance frequency for the angles of TE incidence is researched. The results show that the resonant frequency variation of the traditional dipole FSS is 1.3GHz and the reflection coefficient is reduced by 7.79dB for 0°~45° TE incidence, while the resonant frequency variation of the modified structure is 0.6GHz and the reduction of the reflection coefficient is relatively small. Compared with the traditional dipole FSS, the novel FSS has better angle independence for TE incident waves, which provides a new design method for some projects with a wide range of incident angles.