Comparative analysis of tunable compact rotators
ABSTRACT Three versions of two layer polarization plane rotators in a circular waveguide based on the internal fringing field interaction are considered. They work on the excitation of unusual eigen oscillations within the gap between a pair of peculiar four slot metal irises. The subjects for comparison were the range of rotation angles, the possibility to provide good matching, and the ability of rotators to be tuned by mutual iris to iris rotation. The best properties were found in the case of the conjugated planar chiral irises.