Analysis of Tapered Circular Waveguide for W Millimeter Wavebands

This manuscript analyzes tapered circular waveguides based on eigen function expansion and the coordinate transformation method. The electromagnetic field configuration is rigorously determined within the tapered circular waveguide by solving a set of coupled ordinary differential equations that account for the variations in the waveguide's geometry and material properties. This detailed approach enables a comprehensive understanding of the distribution and behavior of the electric and magnetic fields in the waveguide, providing valuable insights into the waveguide's performance and characteristics. The concept introduced in this paper specifically focuses on the utilization of tapered waveguide segments with gradually varying taper angles to smoothly transition between waveguides of differing cross-sectional dimensions. This approach aims to optimize the transmission of a specific mode within the waveguide system, enhancing the overall performance and functionality of the waveguide structure. Thus chosen structure is intentionally designed to be smooth, aiming to minimize reflections and reduce mode conversion within the waveguide system.