Research and Design of Dual-Band 1:8 Wilkinson Power Dividers for 5G Application

In this paper, a dual-band 1:8 Wilkinson power divider operating at 4.9GHz and 26GHz for 5G application is proposed. It adopts double-section coupled transmission line and two isolation resistances, and achieves low insertion loss through low-loss analysis. The measure results show that the return loss of all ports is less than -15dB and the insertion loss is less than - 9.7dB in 4.54-5.34GHz. At 26GHz, S11<-20dB and the return loss of outputs is greater than -14dB. The insertion loss at 26GHz is less than -12.5dB. In dual-band, the design shows good amplitude and phase consistency and the isolation is better than 13dB. This design can be applied to 5G dual-band multi-port wireless communication in Sub-6GHz and millimeter wave bands.