A Compact Low-Loss On-chip N-Way Wilkinson Power Divider for mm-Wave 5G Applications

This paper presents a compact N-way Wilkinson power divider using symmetric lumped sections for mm-wave applications. As a proof of concept, an 8-way Wilkinson power divider is implemented covering the n260 5G band. The design area is 0.15×0.15 mm ² in 45nm-SOI CMOS technology. For 25% fractional bandwidth, the proposed Wilkinson divider achieves an insertion loss less than 2.1 dB, input/output return loss better than 10 dB, and isolation better than 25 dB between the different output ports.