An ultra-wideband linear-to-circular polarization converter based on multiphysics regulation

In this paper, an ultrawideband linear-to-circular polarization converter(LCPC) based on multiphysics regulation is proposed and studied by combining solid state plasma and vanadium dioxide. The proposed LCPC will exhibit three states which are regulated by the way of electric control and temperature (T) control. The simulation results show that the 3 dB AR band is 14.3-29.7 GHz (the relative bandwidth is 70%) when all the solid state plasma regions are not excited and T<68 °C. The 3 dB AR band will be changed into 14.4-23.4 GHz and 28.6-35.9 GHz(the relative bandwidths are 47.61% and 22.64%) when all the solid state plasma regions are excited and T<68 °C. When all the solid state plasma regions are not excited and T≥68 °C, the 3 dB AR band will become to 8.4-11.2 GHz and 18.7-29.5 GHz (the relative bandwidths are 28.57% and 44.81%).