Patent ID: 9147921
Filing Date: 2015-09-29
Classification: H01P,H01Q

Abstract:
1. An orthomode transducer for splitting a linear orthogonally polarized electromagnetic signal into a plurality of linearly polarized frequency components of the linear orthogonally polarized electromagnetic signal and vice versa, the transducer comprising: a rectangular or circular guide section having a constant cross-section perpendicular to a lengthwise direction of the guide section and first and second lengthwise opposed open ends; and wherein the guide section further includes a first waveguide portion having the same cross-section as the guide section, the first waveguide section being capable of supporting propagation of the linear orthogonally polarized electromagnetic signal, and the first waveguide section extending between the first lengthwise open end of the guide section and a conductive septum; the conductive septum extending with increasing height from an end of the first waveguide portion towards the second lengthwise open end of the guide section, the conductive septum dividing the guide section into a second waveguide portion of the guide section and a third waveguide portion of the guide section having cross-sections smaller than the cross-section of the first waveguide portion, the second waveguide portion and the third waveguide portion being capable of supporting propagation of at least one of the plurality of linearly polarized frequency components; wherein the conductive septum is dimensioned to induce a differential phase shift of substantially 180 degrees or a multiple thereof between the linearly polarized frequency components that are perpendicular to the conductive septum and the linearly polarized frequency components that are parallel to the conductive septum.