Straightforward analysis of the effect of any H ‐plane inductive diaphragm in waveguide

In this study, the mode matching method is used to obtain scattering fields due to discontinuity in a uniform waveguide. Unlike the conventional methods, to avoid directly applying the boundary conditions, a new equation is defined in this approach which implicitly involves the boundary conditions. Since employing the boundary conditions directly is not a concern in the authors’ proposed method, it is faster and simpler than other conventional techniques. Next, they derive this equation mathematically. Finally, simulation results with full‐wave softwares confirm the reasonable accuracy of the proposed method with the aid of some examples.