Metamaterial Based Beamforming Network Integrated with Wilkinson Power Divider

This paper presents a switched beam-forming network (SBFN) integrated with a power divider for 5G applications. The proposed design consists of a metamaterial-based $4 \times4$ butler matrix (BM) and $1 \times2$ Wilkinson power (WPD) divider. The simulated results show that the proposed design achieved an outstanding insertion-loss of $-9 \pm 1$ dB and excellent reflection coefficient between the frequency range of 3.2GHz – 3.7GHz. The simulated phase differences achieved between the output ports are $-45^{\circ} \pm 8^{\circ}$ for the excitation of Input Port-1. The proposed design is suited for a 5G switched-beam antenna array (SAA) because of its enhanced bandwidth and compact structure of BM and WPD.