Comments on "GTD analysis of the near-field patterns of conical and corrugated conical horns"

For original paper see ibid., vol.AP-25, no.3, p.447 (1977) which presents a novel technique for the analysis of the principal plane near-field patterns of conical and corrugated conical horns with small and wide flare angles excited in the dominant mode using the uniform theory of diffraction (UTD). The authors apply a slope diffraction correction, which is necessary in cases where the incident field is rapidly varying at the edge