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

Literature Review: Study of Various Techniques for Beam and Polarization Splitting for mm Waves

In this paper, we present the techniques used for splitting the radiation beam and polarization of mm and sub-millimeter waves. First technique is based on H-plane section which splits the square section pipe into two rectangular.Second technique is based on a confocal quasi optical system with wire grid beam splitter. Another is based on grounded Frequency Selective Surface (FSS) array as millimeter wave beam splitter which demonstrates that the reflection phase of coherent mm-wave can be altered by using FSS array with different slot lengths. Last technique is based on Mylar beam splitters over the range of wavelength between 0.08 mm to 2 mm for angles of incidence between 450 and 80?