Efficient Evaluation of the External Mutual Coupling in Dielectric Covered Waveguide Slot Arrays

Zusheng J;MONTISCI, GIORGIO;CASULA, GIOVANNI ANDREA;Hu Y;Junqi L.

2012-01-01

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Abstract

An accurate and efficient procedure is devised to evaluate the mutual coupling in dielectric-covered planar arrays of longitudinal slots. This approach takes full advantage of the discrete complex image method to cast the spatial-domain Green's functions into closed forms, and hence a direct calculation of mutual coupling in the spatial-domain is available. The computation time reduces significantly compared to the previous spectral-domain procedure, without any loss in the accuracy, rendering this approach very attractive for the design of large dielectric-covered planar arrays.