Small circularly polarized waveguide antenna

Abstract

The invention relates to a small circularly polarized waveguide antenna which comprises a non-standard waveguide antenna and a waveguide coaxial conversion structure, one end of the waveguide coaxial conversion structure is switched to the non-standard waveguide antenna, and the other end of the waveguide coaxial conversion structure is switched to an SMP connector; an inclined waveguide structure with a cut angle is arranged at the caliber of a non-standard waveguide antenna radiation aperture, so that the electric field direction is rotated by 45 degrees, electric field components in the horizontal and vertical directions are formed, the phase difference between the electric field components is changed, finally polarization conversion from linear polarization to circular polarization is achieved, and the antenna radiation function is achieved through the non-standard waveguide antenna. The length of the circular polarizer can be effectively reduced through the inclined waveguide port, and the size and weight of the antenna are effectively reduced.

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