QuinStar’s QWQ Linear-to-Circular Switchable Polarizers cover the frequency range of 12.4 – 170 GHz in 10 waveguide bands.
These Linear-to-Circular Switchable Polarizers have an internal polarizing card. Manually rotating the polarizing card changes the signal between right- and left-hand circular polarizations but without disconnecting the waveguide. Further, a center position on the switch allows linearly polarized signals to pass through the waveguide without changing polarization. These polarizers operate over a bandwidth of typically ± 10% centered at a specific operating frequency.
QuinStar also offers a motorized (electromechanical) version of the switchable polarizer. The motorized version has only two positions corresponding to right- and left-hand circular polarizations. See QWZ for more information.