Patent ID: 8665037

Claim:
A cross polarization multiplexer, which doubles a capacity of radio links by simultaneously working with vertically polarized waves and horizontally polarized waves, the cross polarization multiplexer comprising: a vertical polarization diplexer; a horizontal polarization diplexer; and an orthogonal mode transducer module (OMT) for separating the vertically polarized waves from the horizontally polarized waves, wherein the vertical polarization diplexer and the horizontal polarization diplexer are integrated with the OMT module forming a monoblock body, wherein the OMT module includes a square waveguide having a stepped isolation structure for separating the vertically polarized waves from the horizontally polarized waves, wherein the square waveguide includes: a first input and output window for guiding the vertically polarized waves, the first input and output window being connected to a second window included in the vertical polarization diplexer; and a third input and output window for guiding the horizontally polarized waves, the third input and output window being connected to a fourth window included in the horizontal polarization diplexer, wherein the first input and output window, the second window, the third input and output window, and the fourth window are inaccessible from outside the monoblock body, wherein the OMT module includes a fifth window for connecting to an antenna, wherein the vertical polarization diplexer and the horizontal polarization diplexer are connected to a single board which contains a transmitter circuit and a receiver circuit, wherein each of the vertical polarization diplexer and the horizontal polarization diplexer includes a sixth window and a seventh window respectively for connecting to the single board containing the transmitter circuit and receiver circuit, and wherein the fifth window for connecting to the antenna of the OMT module, the sixth window, and the seventh window are arranged in a same plane constituting an external access to the monoblock body.