5G mobile communication systems 1 Antenna structures 1 Aperture distribution 1 Base station antennas 1 Base station applications 1 Base stations 1 Dielectric lens antenna 1 Directional patterns (antenna) 1 Lens antenna 1 Lens antennas 1 Lens shaping method 1 Millimeter waves 1 Millimetre waves 1 Mobile systems 1 Multi beam radiation pattern 1 Multibeam antennas 1 Shaping method 1 Straight-line condition Wide angle range 1