Polarization-agile antenna based on the power-divider-phase-shifter

A new structure for the polarization-agile antenna was presented based on the power-divider-phase-shifter. By using the power-divider-phase-shifter, two equal-amplitude signals with +90°/-90°switched phase shift at two output ports can be achieved, which can be used to realize a dual-circular polarized polarization-agile antenna. Compared with traditional polarization-agile antenna which use an independent power divider and phase shifter, the new polarization-agile antenna has the advantage of high polarization purity and simple control circuits, etc.