Comments on “A High-Gain Antenna Consisting of Two Slot Elements With a Space Larger Than a Wavelength”

This paper presents a comment on the paper titled " a high gain antenna consisting of two slot elements with a space larger than a wavelength". It is observed that both slot resonances have similar current distribution and demonstrated that gain can be enhanced using any of them. Thus, implicit in this approach is that the study of the saturation of gain with the number of grooves could be applied to any of those resonances.