Integrating an ultra-broadband power splitter and a polarization converter using a zigzag metamaterial

A novel zigzag metamaterial (ZMM) that is completely different from the planar metamaterial (PMM) with the same unit cell, was designed, simulated and verified in the microwave frequency regime. Due to the properties of the impinging, the TE wave and TM wave are almost totally reflected (TE-metal-like) and totally transmitted (TM-dielectric-like) from the ZMM, and the ZMM is able to adjust the power ratio of the reflection to transmission from 5.24 to 14.52 GHz with the relative bandwidth equivalent to 93.93%. Besides, it also can transform the circularly polarized incident wave into a linearly polarized wave. The characteristics of high efficiency, ultra-broadband and angular stability will facilitate the ZMM in practical applications in communication and polarization control device.