Bandwidth Comparison of V-shaped and Trapezoidal Groove Waveguides with Method of Moment

This paper analyzes two typical slot waveguide structures using the Method of Moments. The eigenvalue equation for groove guides is derived. Numerical results demonstrate good agreement with reference values, confirming the correctness of the theoretical analysis and the effectiveness of the developed algorithm. The single-mode bandwidth characteristics of both waveguide types are determined and compared in detail. This comparative analysis provides valuable insights for the engineering application and theoretical study of groove waveguides in millimeter-wave systems.