# US 6,297,710 B1 · Slip joint polarizer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,297,710 B1 - Document ID: US6297710B1 - Status: Granted - Kind: B1 - Application number: 09/388,595 - Filed: 1999-09-02 - Granted: 2001-10-02 - Earliest claimed: 1999-09-02 - Assignees: Channel Master LLC - Inventors: Scott J. Cook; Dennis L. Cronin; Peter L. Gardner; John Michael Vezmar - Web page: https://patentgrep.com/patent/US6297710B1 ## CPC - H01P 1/161: sustaining two independent orthogonal modes, e.g. orthomode transducer {(combining or separating polarisations and frequencies H01P1/2131)} - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) ## Abstract A slip joint polarizer including a stationary waveguide rotatably connected to a moveable waveguide, e.g. an ortho mode transducer, by a mating interface, such as a pair of rotatable mating flanges. The moveable waveguide is rotatable with respect to the stationary waveguide to adjust at least one of receive and transmit polarity. A probe extends axially in the moveable waveguide, passing through the mating interface and into the stationary waveguide. The probe may be attached to the moveable waveguide so that the two rotate simultaneously. Alternatively, the probe may rotate independent of the moveable waveguide to adjust for transmit polarity. During installation, the moveable waveguide is rotated with respect to the stationary waveguide in order to adjust receive and/or transmit polarity. Once properly adjusted, the rotatable mating flanges are locked together to prevent movement. ## Claims ### Claim 1 A slip joint polarizer comprising: a stationary waveguide; a moveable waveguide connected to said stationary waveguide by a rotatable mating interface, said moveable waveguide being rotatable relative to said stationary waveguide to adjust receiving polarity; a probe extending from said movable waveguide, passing through said mating interface and into said stationary waveguide; and a ridge launch attached to an inner surface of said moveable waveguide, wherein one end of said probe is secured to said ridge launch so that said probe rotates with said moveable waveguide, an opposite free end of said probe is disposed in said stationary waveguide. ### Claim 2 (depends on 1) A slip joint polarizer in accordance with claim 1, wherein said stationary waveguide is rectangular in shape. ### Claim 3 (depends on 1) A slip joint polarizer in accordance with claim 1, wherein said stationary waveguide is arranged substantially perpendicular relative to said moveable waveguide. ### Claim 4 (depends on 1) A slip joint polarizer in accordance with claim 1, wherein said rotatable mating interface is a pair of rotatable mating flanges with one flange of said pair disposed on said moveable waveguide and the other flange of said pair disposed on said stationary waveguide. ### Claim 5 (depends on 4) A slip joint polarizer in accordance with claim 4, wherein each flange has at least one channel defined therein for receiving a pin to secure said flanges together. ### Claim 6 (depends on 1) A slip joint polarizer in accordance with claim 1, wherein said moveable waveguide is rotated to adjust for at least one of receive and transmit polarity. ### Claim 7 A slip joint polarizer comprising: a stationary waveguide; a moveable waveguide connected to said stationary waveguide by a rotatable mating interface, said moveable waveguide being rotatable relative to said stationary waveguide to adjust receiving polarity; a probe extending from said movable waveguide, passing through said mating interface and into said stationary waveguide, and said probe is rotatable independent of rotation of said moveable waveguide so as to adjust transmit polarity. ### Claim 8 (depends on 7) A slip joint polarizer in accordance with claim 7, wherein a portion of said probe disposed in said moveable waveguide is bent. ### Claim 9 A slip joint polarizer comprising: a stationary waveguide; an ortho mode transducer having a common port, a side port and a through port, said ortho mode transducer being rotatable relative to said waveguide to adjust at least one of receive and transmit polarity of said side and through ports; a pair of rotatable mating flanges for connecting said through port to an aperture in a top wall of said stationary waveguide, and a probe extending from said ortho mode transducer, passing through said mating interface and into said stationary waveguide. ### Claim 10 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein said stationary waveguide is rectangular in shape. ### Claim 11 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein said stationary waveguide is arranged substantially perpendicular relative to said ortho mode transducer. ### Claim 12 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein each flange has at least one aperture defined therein for receiving a pin to secure said flanges together. ### Claim 13 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein one end of said probe is secured to an inner surface of said moveable waveguide via a ridge launch so that said probe rotates with said ortho mode transducer, an opposite free end of said probe is disposed in said stationary waveguide. ### Claim 14 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein a portion of said probe disposed in said ortho mode transducer is bent. ### Claim 15 (depends on 14) A slip joint polarizer in accordance with claim 14, wherein said probe is fixedly connected to and rotates with said ortho mode transducer. ### Claim 16 (depends on 14) A slip joint polarizer in accordance with claim 14, wherein said probe is rotatable independent of rotation of said ortho mode transducer so as to adjust transmit polarity. ### Claim 17 (depends on 9) A slip joint polarizer in accordance with claim 9, wherein said ortho mode transducer is rotated to adjust for at least one of receive and transmit polarity. ### Claim 18 A method for installing a slip joint polarizer comprising the steps of: providing a slip joint polarizer including a stationary waveguide, a moveable waveguide connected via a rotatable mating interface to said stationary waveguide, and a probe extending from said moveable waveguide, through said mating interface and into said stationary waveguide, a ridge launch being attached to an inner surface of said moveable waveguide, wherein one end of said probe is secured to said ridge launch so that said probe rotates with said moveable waveguide, an opposite free end of said probe is disposed in said stationary waveguide; rotating said moveable waveguide relative to said stationary waveguide to adjust at least one of receive and transmit polarity; and locking said moveable waveguide in position relative to said stationary waveguide. ### Claim 19 (depends on 18) A method in accordance with claim 18, wherein said mating interface comprises a pair of rotatable mating flanges with one flange of said pair disposed on said moveable waveguide and the other flange of said pair disposed on said stationary waveguide, each flange having at least one channel defined axially therethrough. ### Claim 20 (depends on 19) A method in accordance with claim 19, wherein said locking step comprises inserting a pin through aligned channels in each flange. ### Claim 21 (depends on 18) A method in accordance with claim 18, wherein said stationary waveguide is rectangular in shape. ### Claim 22 (depends on 18) A method in accordance with claim 18, wherein said stationary waveguide is arranged substantially perpendicular relative to said moveable waveguide. ### Claim 23 (depends on 18) A method in accordance with claim 18, wherein said moveable waveguide is an ortho mode transducer having a common port, a side port and a through port. ### Claim 24 (depends on 23) A method in accordance with claim 23, wherein said rotating step comprises rotating said ortho mode transducer to adjust at least one of receive and transmit polarity of said through and side ports. ### Claim 25 A method for installing a slip joint polarizer comprising the steps of: providing a slip joint polarizer including a stationary waveguide, a moveable waveguide connected via a rotatable mating interface to said stationary waveguide, and a probe extending from said moveable waveguide, through said mating interface and into said stationary waveguide; rotating said moveable waveguide relative to said stationary waveguide to adjust at least one of receive and transmit polarity, said probe being rotatable independent of rotation of said moveable waveguide; and locking said moveable waveguide in position relative to said stationary waveguide. ### Claim 26 (depends on 25) A method in accordance with claim 25, wherein a portion of said probe disposed in said moveable waveguide is bent and said probe is rotatable independent of rotation of said moveable waveguide. ### Claim 27 (depends on 25) A method in accordance with claim 25, further comprising the step of rotating said probe to adjust transmit polarity. ### Claim 28 A slip joint polarizer comprising: a stationary waveguide; a moveable waveguide connected to said stationary waveguide by a rotatable mating interface, said moveable waveguide being rotatable relative to said stationary waveguide to adjust receiving polarity, said moveable waveguide being an ortho mode transducer; and a probe extending from said movable waveguide, passing through said mating interface and into said stationary waveguide. ### Claim 29 A method for installing a slip joint polarizer comprising the steps of: providing a slip joint polarizer including a stationary waveguide, a moveable waveguide connected via a rotatable mating interface to said stationary waveguide, and a probe extending from said moveable waveguide, through said mating interface and into said stationary waveguide, said moveable waveguide being an ortho mode transducer; rotating said moveable waveguide relative to said stationary waveguide to adjust at least one of receive and transmit polarity; and locking said moveable waveguide in position relative to said stationary waveguide.