This work reports the development of antennas and antenna arrays for the future 5G cellular networks, which have been realized at the Brazilian Institute of Telecommunications (Inatel) in the last four years. Diverse reconfigurable antenna types based on printed and milled structures have been designed, fabricated and proper characterized from microwaves to mm-waves, with the aim of fulfilling the requirements of 5G networks. Numerical simulations and experimental investigations for frequencies up to 40 GHz demonstrate the applicability of the proposed and innovative antenna for the 5G lower/higher frequency bands.