Continuous Beam-Steering Low-Loss Millimeter-Wave Antenna Based on a Piezo-Electrically Actuated Metasurface

A novel antenna beam-steering technology is proposed for emerging millimeter-wave (mm-wave), broadband mobile technologies such as 5G and beyond. high-gain (23 dBi) with 30° beam steering designed tested at around the 38 GHz band. Fabry–Perot type leaky-wave (LWA) employed main radiating structure, a tunable high-impedance surface (HIS) used ground plane. The HIS phase tuning accomplished by electro-mechanically varying displacement between periodic metasurface layer plane using flexure amplified piezoelectric actuator (PEA). exhibits very low loss (<1 dB) along fast (in order of ms.) continuous steering. measured simulated results show close agreement suggest that PEA-tuned, metasurface-based antennas offer promising solution use in future mm-wave communication systems.