Ortho-mode transducer and diplexer

Patent metadata

Field	Value
Publication number	US-10326189-B2
Application number	US-201715497061-A
Country	US
Kind code	B2
Filing date	Apr 25, 2017
Priority date	Apr 25, 2017
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

A method includes receiving, through a vertical polarization port of an orthogonal-mode transducer (OMT), a vertical polarized signal from a vertical polarization diplexer, and receiving, through a horizontal polarization port of the OMT, a horizontal polarized signal from a horizontal polarization diplexer. The method also includes receiving, through a common port of the OMT, a circular polarized signal comprising the vertical and horizontal polarized signals. The common waveguide includes a septum polarizer configured to split or combine between the circular polarized signal, and the vertical polarized signal and the horizontal polarized signal.

First claim

What is claimed is:

1. A method comprising:
receiving, through a vertical polarization port of an ortho-mode transducer, a vertical polarized signal from a vertical polarization diplexer;
receiving, through a horizontal polarization port of the ortho-mode transducer, a horizontal polarized signal from a horizontal polarization diplexer;
receiving, through a common port of the ortho-mode transducer, a circular polarized signal comprising the vertical polarized signal and the horizontal polarized signal; and
receiving, through a common waveguide connected to the common port and in communication with the vertical polarization port and the horizontal polarization port, the circular polarized signal, the common waveguide comprising a septum polarizer configured to split or combine between:
the circular polarized signal; and
the vertical polarized signal and the horizontal polarized signal,

wherein the common port of the ortho-mode transducer defines a circular cross-sectional shape, and the vertical polarization port and the horizontal polarization port each define a rectangular cross-sectional shape.

2. The method of claim 1 , further comprising:
receiving the vertical polarized signal through a vertical polarization waveguide connected to the vertical polarization port, the vertical polarization waveguide connected to the common waveguide; and
receiving the horizontal polarized signal through a horizontal polarization waveguide connected to the horizontal polarization port, the horizontal polarization waveguide configured to define a first curved path and a second curved path oriented differently from the first curved path, the horizontal polarization waveguide defining a bifurcation into first and second bifurcated waveguides, the first and second bifurcated waveguides connected to the common waveguide.

3. The method of claim 2 , wherein the first curved path of the horizontal polarization waveguide is disposed in a first plane and the second curved path of the horizontal polarization waveguide is disposed in a second plane substantially perpendicular to the first plane.

4. The method of claim 3 , wherein each bifurcated waveguide defines a third curved path disposed in a third plane parallel to the second plane and a fourth curved path disposed in a fourth plane parallel to the first plane.

5. The method of claim 2 , wherein the common waveguide defines a bifurcation junction having a square cross-sectional shape, the bifurcation junction connected to the first and second bifurcated waveguides of the horizontal polarization waveguide.

6. The method of claim 1 , wherein:
the vertical polarization diplexer comprises:
a vertical polarization transmit port;
a vertical polarization receive port;
a vertical polarization common port in communication with the vertical polarization transmit port, the vertical polarization receive port, and the vertical polarization port of the ortho-mode transducer;
a vertical polarization transmit waveguide connected to the vertical polarization transmit port and the vertical polarization common port;
a vertical polarization receive waveguide connected to the vertical polarization receive port and the vertical polarization common port; and
a vertical polarization common waveguide connected to the vertical polarization common port and the vertical polarization port of the ortho-mode transducer,
wherein the vertical polarization transmit waveguide, the vertical polarization receive waveguide, and the vertical polarization common waveguide each define a rectangular cross-sectional shape, and
wherein the vertical polarization transmit waveguide and the vertical polarization receive waveguide are configured to receive a corresponding vertical polarized transmit signal and a corresponding vertical polarized receive signal at different frequencies; and

the horizontal polarization diplexer comprises:
a horizontal polarization transmit port;
a horizontal polarization receive port;
a horizontal polarization common port in communication with the horizontal polarization transmit port, the horizontal polarization receive port, and the horizontal polarization port of the ortho-mode transducer;
a horizontal polarization transmit waveguide connected to the horizontal polarization transmit port and the horizontal polarization common port;
a horizontal polarization receive waveguide connected to the horizontal polarization receive port and the horizontal polarization common port; and
a horizontal polarization common waveguide connected to the horizontal polarization common port and the horizontal polarization port of the ortho-mode transducer,
wherein the horizontal polarization transmit waveguide, the horizontal polarization receive waveguide, and the horizontal polarization common waveguide each define a rectangular cross-sectional shape, and
wherein the horizontal polarization transmit waveguide and the horizontal polarization receive waveguide are configured to receive a corresponding horizontal polarized transmit signal and a corresponding horizontal polarized receive signal at different frequencies.

7. The method of claim 6 , wherein:
the vertical polarization transmit waveguide is configured to receive the vertical polarized transmit signal having a frequency between about 81 GHz and about 86 GHz,
the vertical polarization receive waveguide is configured to receive the vertical polarized receive signal having a frequency between about 71 GHz and about 76 GHz,
the horizontal polarization transmit waveguide is configured to receive the horizontal polarized transmit signal having a frequency between about 81 GHz and about 86 GHz, and
the horizontal polarization receive waveguide is configured to receive the horizontal polarized receive signal having a frequency between about 71 GHz and about 76 GHz.

8. The method of claim 6 , further comprising:
receiving the vertical polarized signal through the vertical polarization diplexer to/from a vertical polarization radio having a vertical polarization transmit output in communication with the vertical polarization transmit port of the vertical polarization diplexer and a vertical polarization receive input in communication with the vertical polarization receive port of the vertical polarization diplexer; and
receiving the horizontal polarized signal through the horizontal polarization diplexer to/from a horizontal polarization radio having a horizontal polarization transmit output in communication with the horizontal polarization transmit port of the horizontal polarization diplexer and a horizontal polarization receive input in communication with the horizontal polarization receive port of the horizontal polarization diplexer.

9. The method of claim 8 , further comprising:
receiving the vertical polarized transmit signal through a vertical polarization powered amplifier connected to the vertical polarization transmit output of the vertical polarization radio and the vertical polarization transmit port of the vertical polarization diplexer;
receiving the vertical polarized receive signal through a vertical polarization low noise amplifier connected to the vertical polarization receive input of the vertical polarization radio and the vertical polarization receive port of the vertical polarization diplexer;
receiving the horizontal polarized transmit signal through a horizontal polarization powered amplifier connected to the horizontal polarization transmit output of the horizontal polarization radio and the horizontal polarization transmit port of the horizontal polarization diplexer; and
receiving the horizontal polarized receive signal through a horizontal polarization low noise amplifier connected to the horizontal polarization receiv

Assignees

• Google Inc
• Google Llc

Inventors

• Nezakati Toktam
• Tabatabai Farbod
• Xin Siyuan
• Yaffe Benjamin K
• Williams Keith Thomas
• Tinoco Eduardo
• Rivas Jose Alex

Classifications

• H01P1/171

  using a corrugated or ridged waveguide section · CPC title

• H01P1/161 Primary

  sustaining two independent orthogonal modes, e.g. orthomode transducer {(combining or separating polarisations and frequencies H01P1/2131)} · CPC title