“Ultra Wideband Horn Antenna With Operating Frequency Range 1–20 GHz and Low Side Lobe Level”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 41, Oct. 2010, pp. 68-73, https://doi.org/10.20535/RADAP.2010.41.68-73.