The present disclosure provides for a fabrication layout and design for transmission lines that are implemented as part of a differential Wilkinson power divider/combiner. The transmission lines are configured and arranged in a poly-loop line geometry. The poly-loop line geometry includes overlapping transmission lines to route differential signals within the differential Wilkinson power divider/combiner. The overlapping transmission lines each include a crossover region to route the differential signals. The crossover represents a spacing between the overlapping transmission lines that encompasses a magnetic flux of the overlapping transmission lines.
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