Patent ID: 8542081

Claim:
A bend-twist transition section of a waveguide, the bend-twist transition section comprising: a horizontal channel portion and a horizontal transition portion; a vertical channel portion and a vertical transition portion; and a common bisecting plane of the horizontal and vertical channel portions formed by a connection-edge plane in the waveguide; wherein the bend-twist transition section is configured to communicate a signal between the horizontal channel portion and the vertical channel portion; wherein the bend-twist transition section is configured to change a geometrical orientation of an electric field of the signal by 90 degrees and change a direction of the signal by 90 degrees; wherein the horizontal transition portion is progressively stepped down until below the common bisecting plane; wherein the horizontal transition portion and the vertical transition portion intersect with the horizontal transition portion being below the common bisecting plane; wherein the vertical transition portion orthogonally intersects the horizontal transition portion at the common bisecting plane; and wherein the vertical transition portion also intersects the horizontal transition portion orthogonally with respect to the common bisecting plane.