Beam Squint in Ultra-wideband mmWave Systems: RF Lens Array vs. Phase-Shifter-Based Array

In this article, we discuss the potential of radio frequency (RF) lens for ultra-wideband millimeter-wave (mmWave) systems. terms beam squint, compare proposed RF antenna with phase shifter-based array hybrid beamforming. To reduce complexities fully digital beamforming, researchers have come up lens-based The use mmWave systems, however, causes an increase in bandwidth, which gives rise to squint phenomenon. We first find causative factors dielectric antenna. Based on beamforming gain at each frequency, verify that, a specific situation, can be free effect. 3D electromagnetic analysis software numerically interpret type. results, present degraded spectral efficiency by system-level simulations indoor ray tracing. Finally, our analysis, fabricate actual and demonstrate real performance using mmWave, NI PXIe, software-defined system.