A Low-Cost Thin Active Phased Array for 5G Applications

Abstract

A 256-element planar phased array is designed and measured, operating between 24.25 GHz and 27.5 GHz. The low-cost array architecture is based on a quad-channel beamforming Radio Frequency Integrated Circuit (RFIC) and multilayer stacked PCB technology. Measured results achieved show that the proposed phased array antenna is efficient in achieving good radiation characteristics with a simple structure. The antenna has a gain of 27.2 dB, 3-dB beam-width of 5.2° and SLLs of −12 dB with uniform-distribution at Ka band.