Patent ID: 6879221

Claim:
A wave guide twist providing orthogonal rotation of both direction and polarization, comprising: a) a transformer section having a first transformer end face and a first transformer side face lying in mutually orthogonal planes; b) a first rectangular waveguide for propagating microwave energy having a first polarization, the first waveguide having a first rectangular cross-section and an axis arranged orthogonal to the first transformer end face, and a short side parallel to the first transformer side face, the first waveguide terminating in a first waveguide end face; c) a first iris located between the first waveguide end face and the first transformer end face, the first iris having a first iris cross-section smaller than the first rectangular cross-section of the first waveguide; d) a second rectangular waveguide having a second rectangular cross-section orthogonal to the first rectangular cross-section of the first waveguide, and a second waveguide end face, the second waveguide having a longitudinal axis arranged orthogonal to the first transformer side face, and a long side parallel to the first transformer end face so as to propagate microwave energy having a polarization orthogonal to the first polarization in the first waveguide; and e) a second iris located between the second waveguide end face and the first transformer side face, the second iris having a second iris cross-section smaller than the second rectangular cross-section of the second waveguide.