Centimeter-Wave Electronically Scanned Array for Future 6G Applications

This work presents an electronically controlled reconfigurable scanned array utilizing reflective phase shifters, designed for future 6G applications. Operating within the centimeter-wave (cmWave) frequency band (13–17 GHz), the electronically scanned array (ESA) demonstrates excellent performance. The system comprises a 2 × 2 horn antenna array interconnected with four digitally controlled variable reflect-type phase shifters, each constructed using a 90° hybrid coupler with a movable short-circuit. Additionally, the assembly includes E-H feeding networks, facilitating uniform signal distribution to the antenna array. Simulation results of the complete ESA exhibit outstanding performance, showcasing continuous mainlobe scanning in elevation and azimuth planes. The proposed ESA achieves a matching level below -15 dB with a stable gain of 14 ± 2 dBi over the operating bandwidth.