Patent ID: 6313714
Filing Date: 2001-11-06
Classification: H01P

Abstract:
A waveguide coupler, comprising a waveguide coupling section having a substantially square cross-section with a width tapering from a first width at a fist end of said waveguide coupling section to a second, smaller width at a second end of said waveguide coupling section, said waveguide coupling section first end being adapted to be coupled to an end of a first waveguide to receive TE.sub.01 mode waves of a first bandwidth therefrom, each side of said square waveguide coupling section having a turnstile port therein to generate circularly polarized TE.sub.01 mode waves of the first bandwidth, and said waveguide coupling section second end being adapted to be coupled to an end of a second waveguide to couple the first and second waveguides together such that the dominant TE.sub.01 mode waves are cut off and circularly polarized TE.sub.01 mode waves are coupled to circularly polarized dominant TE.sub.11 mode waves of the first bandwidth.