The continuous demand for high data rate communication links is a state-of-the-art in nowadays 5G mobile networks. Millimeter-wave (mmWave) is highly attractive for performing data transmission due to the available bandwidth at such high frequency band. In order to relieve the free space path loss, high gain antennas are required as well as improved coverage characteristics for users within the field of view of interest. As a consequence, reliable 5G point to multipoint communication require stable aggregate gain in the farfield with low roll-off at crossover points between adjacent beams. Previous works based on lenses or quasi optical systems in the mmWave band such as Ruze lenses, Rotman lenses and Luneburg lenses are not suitable to fulfill this requirement.