The invention discloses a
circular waveguide TE01 mode mode converter, which comprises a rectangular
waveguide power division structure unit, a mode conversion structure unit and a
waveguide gradient structure unit, the rectangular
waveguide power division structure unit is connected with the mode conversion structure unit, and the mode conversion structure unit is connected with the mode conversion structure unit The waveguide gradient structure unit is connected; when the rectangular waveguide
power division structure unit includes a two-level
branch waveguide structure, the electromagnetic wave TE10 mode first enters through the rectangular waveguide power division structure unit, and forms two channels of equal amplitude power division through the two first-level
branch waveguide structures. TE10
modes with equal amplitude and phase, and then two channels of TE10
modes with equal amplitude and phase are divided into four channels of TE10
modes with equal amplitude and phase through the second-stage
branch waveguide structure. The structure unit is converted, and after the conversion, the
circular waveguide is obtained through the waveguide gradual change structure unit and the TE01 mode is output; the invention has the advantages of
high mode purity, wide working bandwidth and easy
processing.