Research on High-Power Arbitrary Polarization Twist Technology

To address the issue of power capacity limitation due to physical size constraints in existing arbitrary polarization controller(APC), this paper designs a rotary waveguide APC with high power capacity. The device is composed of polarization converter and a circular polarizer. Additionally, to ensure continuous signal transmission during the rotation of the device, a choke rotary joint for the APC has been designed. The total length of the APC is 520.8 mm. Simulation results demonstrate that within the central frequency range of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$10 \text{GHz} \pm 100 \text{MHz}$</tex>, this APC can control and output linearly polarized waves, circularly polarized waves, and elliptically polarized waves with any axial ratio. The power capacity, as calculated through simulation, can reach up to 1.5 GW.