5G Antenna Array Fed by a Microstrip Rotman Lens

5G (generation) of wireless communications require higher data rates compared to the previous generations (3G, 4G and LTE). To achieve these high data rates, that can go up to gigabits per second (Gbps) [1]–[3], frequencies that are within the millimeter-wave spectrum are being deployed. Specifically, the 28GHz band was chosen to be one of the main bands for 5G communications. To achieve this goal, the systems used within these base stations need to have high gain while also being low-cost, so that they can be used commercially.