3D printed compact 2-way Wilkison power divider/combiner for RF applications

In this work we present the design, additive manufacturing (AM) using 3D printing, and characterization of very compact 2-way Wilkinson power dividers/combiners for application in the sub-GHz RF band. We employ two helical-microstrip transmission line segments to implement the proposed Wilkinson devices. The fabricated components are then compared with a reference Wilkinson device implemented using standard PCB technology, working at the same central frequency. The results demonstrate that the proposed 3D-printed devices achieve similar performance in terms of port matching and bandwidth compared to the reference design, but with a significant reduced area.