5G networks require high-speed, point-to-point communication at millimeter-wave frequencies within a cost structure that operators are able deploy economically. The explosive increase in ultra-dense 5G infrastructure systems required to accommodate high-speed mobile data traffic and IoT data is fueling a demand for low-cost, robust and reliable RF subsystems. Key to making 5G a reality will be the use of compact and reconfigurable antennas that can be integrated on urban buildings and street furniture with minimal deployment cost.
However, at millimeter-wave frequencies between 30 and 300 GHz, severe path loss must be compensated through high-gain antennas enabled by transmit-array designs. Leveraging its expertise in antenna design, CEA-Leti previously collaborated with Radiall on transmit-array technology development. This collaboration resulted in a V-band (57-66 GHz) high-gain (32 dBi) antenna delivering up to 20 Gb/s that Radiall added to its product line.
Multi-source transmit-array architecture is a promising way to address this challenge because it minimizes the thickness of the antenna, while maintaining stability of the antenna gain over the entire bandwidth and controlling the sidelobe levels.