Electromagnetic Modeling of a Slotted Waveguide Feed Technique Device Based on a Comparative Study of WCIP and MOM-GEC Methods

Traditional microstrip antenna techniques of feed are not viable for 5G millimeter applications due to significative losses especially the skin effect. In this article, we hold to study the electromagnetic aspect of a useful and viable feed technique at millimeter wavelengths namely the Slotted Waveguide Feed Technique. In order to overcome the drawbacks of the classical method where the propagation losses associated with the evanescent modes were not taken into consideration, we include the concept of surface impedance. The originality of this work is also to ensure the electromagnetic study based on the Generalized Equivalent Circuit Combined to the Method of Moments (MOM-GEC) which is considered among the most interesting integral methods to apply for the electromagnetic study of planar structures. To show the advantages of our proposed Method, we present a comparison between the MOM-GEC Method and the Wave Concept Iterative Process (WCIP) in terms of computational times and complexity. We have proved their validation since boundary conditions were verified for the electric distribution and the current distribution. Moreover, we have proved the advantage of the MOM-GEC in terms of computational time and formulation simplicity.