Full-structure analysis of alternating-phase fed single-layer slotted waveguide arrays

The feed circuit and waveguide arrays with slots cut in can be analyzed be the method of moments separately. By cascading the S-matrices considering of only dominant TE10 mode, full-structure analysis is achieved. The calculated results for reflection and directivity coincide with the simulated ones by HFSS. The accuracy for the analysis method is confirmed. As the key point, the calculation time for one frequency is within one minute, which is the big advantage over HFSS. The design technique to improve the uniformity in excitation and reflection is remained as the future work.