Figure 9

(a) Surface current distribution at 11.5 GHz for the wave guide port oriented in X direction. (i) for l = 2.5 mm, (ii) for l = 3.5 mm. (b) Surface current distribution at 11.5 GHz for the wave guide port oriented in Y direction. (i) for l = 2.5 mm, (ii) for l = 3.5 mm (CST STUDIO SUITE 2019, https://www.3ds.com/products-services/simulia/products/cst-studio-suite)42.