Hoel, Karina Vieira; Ignatenko, Maxim; Kristoffersen, Stein; Lier, Erik; Filipovic, Dejan. 3-D Printed Monolithic GRIN Dielectric-Loaded Double-Ridged Horn Antennas. IEEE Transactions on Antennas and Propagation 2020 ;Volum 68.(1) s. 533-539