A New Class of Method With TE/TM Wave Decomposition and Superposition Enabling High-Efficiency Transmitarray Antenna

The first-of-its-kind TE/TM wave decomposition and superposition methods for a rotational arrangement to the polarization of the unit cell are proposed and demonstrated computationally and experimentally, which can significantly enhance the aperture efficiency of the low-profile transmitarray (TA) antenna. Phase variation on the TA aperture stemming from the unit cell arrangement method was calculated by extracting the coupling coefficient between unit cells through the reflection coefficient Floquet response using TE/TM wave decomposition and superposition methods to validate the utility of the proposed unit cell arrangement. The proposed TA antenna exhibits a low focal length to diameter (F/D) ratio of 0.33 and an aperture efficiency of 40.5% at a center frequency of 3.5 GHz with an aperture size of 5.1λ
o
× 5.1λ
o
.