A Novel Miniaturized Aperture Hexagonal Frequency Selective Surface

In this paper, a novel miniaturized hexagonal frequency selective surface (FSS) element is proposed, where the structure has a dual-polarized angular stable passband. The simulated results show that the resonant frequency of the FSS is at 2.994 GHz and the 3dB passband is 2.45 GHz–3.58 GHz for both TE and TM polarization. In the range of 70° incident angle, the transmission zero of TE polarized wave is only shifted by 0.2%, which has high angle stability and good polarization stability.