Wide-angle wave polarization converter base on field transformation approach

Summary form only given. Polarization control is one of the important issues in electric-magnetic (EM) wave propagation manipulation [1]. In this paper, we proposed a wide-angle EM wave polarization converter based on a field transformation (FT) method [2]. Using this converter, for an incident TE/TM wave, it can be completely transmitted to its corresponding TM/TE mode, and meanwhile for an incident LCP/RCP wave, it also can be completely transmitted to RCP/LCP wave with wide incident angle. However, for the same converter with half thickness putting on a perfect conductor surface (PEC) it exhibits to be a reflection case of the EM wave polarization set converter. It can reflect an incident TE/TM wave to the corresponding TM/TE mode and perfectly reflect an incident LCP/RCP wave (For a normal PEC, it reflects an incident LCP wave to a RCP one). To realize such EM wave polarization set converter, we applied a field transformation (FT) method to design the constitute parameters of the converter based on anisotropic materials. This method is complementary to the transformation optics (TO) approaches about coordinate transformations. We carry out a full-wave simulation using CST. Results of the energy conversion ratio for both transmission and reflection cases mentioned above are shown in the figure below.