Phased Array for 5G FD-MIMO System at 29 GHz

Design of a compact high power phased array for 5G FD-MIMO system at 29 GHzThe fifth generation (5G) wireless communication is the next major phase of mobile communications standards beyond the current LTE-Advanced. In order to meet 5G faster speed (1-10 Gbps), millimeter wave frequency band has been recommended for 5G wireless communication. Ka band (29 GHz) has been targeted for short-range, high data rate communication. One major challenge in the implementation of 29 GHz wireless is high path loss. Microstrip based network are lossy at such high frequency and can’t handle high power. Waveguide based network are suitable in Ka band because of low loss, high power handling capability and reliability but these are complex network to design and solve.

Mobile communications networks use MIMO technology to achieve high data rates. In an FD-MIMO (Full Dimension MIMO) system, as shown in fig. 1, a base station with 2-dimensional active array supports both elevation and azimuth beamforming (3D beamforming), which results in much higher cell capacity compared to conventional systems. A new beamforming network based on rectangular waveguide WR28 is realized using latest simulation and design capability of Keysight EDA (Electronics Design Automation) tool.

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