Constant-amplitude in-phase waveguide three-way power divider/synthesizer

The invention discloses a constant-amplitude in-phase three-way waveguide power divider/synthesizer, which is characterized in that three-way rectangular waveguide ports are arranged on the same plane, a second-way rectangular waveguide provided with a section of zigzag waveguide is arranged in the middle, and the structure of a first-way rectangular waveguide is the same as that of a third-way rectangular waveguide; the first-path rectangular waveguide and the third-path rectangular waveguide are arranged on two sides of the second-path rectangular waveguide and are arranged in mirror symmetry along a second linear waveguide in the second-path rectangular waveguide; two sides of the second linear waveguide are respectively provided with coupling holes and metal ridges, and the coupling holes and the metal ridges on each side are arranged in a row at intervals on the second linear waveguide; and step ridge waveguide structures are respectively added into the first path of rectangular waveguide and the third p