Abstract
The fifth generation mobile communications (5G) are expected to accommodate the forthcoming huge traffic demands, and the massive multiple input multiple output (MIMO) technology utilizing hundreds of antenna elements has drawn attention as a key antenna configuration for envisioned 5G. In order to realize the active phased array antenna (APAA), a highly integrated GaAs RF frontend module is developed at 28GHz-band. The module includes a four-stage power amplifier (PA), a three-stage low noise amplifier (LNA) and a switch. With utilizing antenna RF units including the GaAs RF frontend modules, the 16-beam spatial-multiplexing transmission trial is performed. The trial results demonstrate a spectral efficiency of 63.7bps/Hz and a downlink transmission rate of 25.5Gbps.
Published Version
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