Abstract
We propose an effective and accurate analysis technique based on the method of moments (MoM) for the characterization of a longitudinal slot with a short truncated waveguide above it. This antenna has been used in the recent literature as the radiating element of large waveguide arrays. We focus our attention on some features and applications of this configuration which have not been taken into account in previous works. Then, we discuss the need for a tailored, effective and accurate analysis technique linking the radiating properties of the proposed antenna to its circuital properties according to Elliott's model. This task is easy by using the MoM with entire domain sinusoidal basis functions. The results of our procedure are compared with those of Ansoft HFSS against the computational time, showing a significant improvement.
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