Study and Analysis of Power and Polarization Splitting techniques for mm waves using COMSOL Multiphysics 5.2a

To test different properties of plasma radiation, different ECE instruments like Michelson interferometer and Radiometer are placed at a distance from the front end optics. To guide the radiation source from the front end optics to the measuring instruments, power/beam splitter box or power switching techniques are used. In this paper, numerical simulation of different techniques for power and polarization splitting unit is analyzed using COMSOL Multiphysics 5.2a software. First technique is of rectangular waveguide power splitter unit, in which the power at the output ports are analyzed. Second technique discussed is based on wire grid polarizer having a unit cell structure. Transmission coefficient for parallel and perpendicular waves are simulated. Lastly, circular waveguide based power splitter unit is designed and analyzed for power distribution at output ports