A very simple in-phase combiner. There are others, Branch line, Rat-race, Lange, Gysel, each with +-. The main weakness of the Wilkinson is that the balance resistor needs to be close between the power transmission lines, placing topology restrictions on the design (Especially if a > 3 combiner). Other designs can shift the dissipation load away from the combiner.
Choose Catalog to move the design to a substrate. Nudge to change line values!