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A Hybrid Beamforming-Based Transceiver with Antenna in Package for Millimeter-Wave Small Cell

A millimeter-wave hybrid beamforming-based (HBF) transceiver designed for small cell has been presented in this paper. A large-scale array for massive MIMO is divided into several subarrays. Every subarray has 16 active elements and adopts analog beamforming to save the number of digital processing channels. A dual-polarized antenna in package (AiP) architecture is constructed to implement each subarray, which operates from 23.2 to 28.3 GHz in vertical polarization and from 23.4 to 27.5 GHz in horizontally polarization. By using multiple AiP subarrays, the transceiver has a maximum transmit linear power more than 33 dBm and a receive sensitivity of -76 dBm. The proposed transceiver can meet the need of small cell well and achieve miniaturization, large capacity and high-data rate.