Patents by Inventor Jamie Stokes

Jamie Stokes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10054739
    Abstract: An optical transceiver may include pairs of lasers, each laser of a particular pair generating light at the same wavelength and each pair of lasers generating light at different wavelengths. The light from the lasers may be demultiplexed onto a pair of outputs, with each output receiving light from different lasers of each pair of lasers.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: August 21, 2018
    Assignee: Kaiam Corp.
    Inventors: Owen Shea, Bardia Pezeshki, Andrew Grant, Jamie Stokes, Henk Bulthuis, Dinh Ton, Ramsey Selim
  • Publication number: 20180083417
    Abstract: A switch module includes a switch integrated circuit (IC), a photonic integrated circuit (PIC), and a planar lightwave circuit (PLC). The PIC may include a plurality of light sources, an optical splitter, and a plurality of modulators. A dual MEMS may be used to align lens arrays, which may be used to couple light from the PIC to the PLC.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 22, 2018
    Inventors: Bardia Pezeshki, Dinh Ton, Susannah Heck, Gideon Yoffe, Lucas Soldano, Henk Bulthuis, Suresh Rangarajan, Jamie Stokes, Ramsey Selim
  • Publication number: 20180081117
    Abstract: An optical transceiver may include pairs of lasers, each laser of a particular pair generating light at the same wavelength and each pair of lasers generating light at different wavelengths. The light from the lasers may be demultiplexed onto a pair of outputs, with each output receiving light from different lasers of each pair of lasers.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 22, 2018
    Inventors: Owen Shea, Bardia Pezeshki, Andrew Grant, Jamie Stokes, Henk Bulthuis, Dinh Ton, Ramsey Selim
  • Patent number: 7215222
    Abstract: There is disclosed herein a waveguide rotator for use with a dual polarization waveguide probe system. The waveguide has an internal structure that protrudes into the waveguide such that a first orthogonal component of the incident polarized signal propagates to the end of the waveguide and is reflected therefrom and the second orthogonally polarized component is cut-off by the protruding structure which narrows the waveguide, at a distance from a short circuit at the end of the waveguide, and is reflected substantially at the cut-off point, the cut-off point being frequency dependant. At some predetermined distance from the reflecting means and the cut-off point, the first component and the second component are recombined such that the polarization of the recombined structure is rotated 90° from the incident polarization. The protruding interior surface creates a pocket or cavity behind the waveguide into which components from a circuit board can be inserted.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: May 8, 2007
    Assignee: Channel Master Limited
    Inventors: Andrew Patrick Baird, Jamie Stokes
  • Publication number: 20050140461
    Abstract: There is disclosed herein a waveguide rotator for use with a dual polarization waveguide probe system. The waveguide has an internal structure that protrudes into the waveguide such that a first orthogonal component of the incident polarized signal propagates to the end of the waveguide and is reflected therefrom and the second orthogonally polarized component is cut-off by the protruding structure which narrows the waveguide, at a distance from a short circuit at the end of the waveguide, and is reflected substantially at the cut-off point, the cut-off point being frequency dependant. At some predetermined distance from the reflecting means and the cut-off point, the first component and the second component are recombined such that the polarization of the recombined structure is rotated 90° from the incident polarization. The protruding interior surface creates a pocket or cavity behind the waveguide into which components from a circuit board can be inserted.
    Type: Application
    Filed: February 18, 2005
    Publication date: June 30, 2005
    Applicant: Channel Master Limited
    Inventors: Andrew Baird, Jamie Stokes
  • Patent number: 6839037
    Abstract: A dual circular polarization waveguide (24) is described which has a septum (36) which divides the waveguide (24) into two separate compartments (38, 40) each with a probe (30A, 30B) passing through the end wall (32) of the waveguide (24) into the compartment (38, 40) to detect respective signals in each of the compartments (38, 40). The septum (36) is proportioned and dimensioned to convert the left and right circularly polarized signals, into substantially linearly polarized signals as the signals pass along the waveguide (24) past the septum (36) so as by the time the signals reach the probes (30A, 30B) they are linearly polarized. The probes (30A, 30B) which pass through the rear wall (32) of the waveguide (24) are oriented such that they couple into the magnetic field of the primary or fundamental waveguide mode.
    Type: Grant
    Filed: November 23, 2000
    Date of Patent: January 4, 2005
    Assignee: Channel Master Limited
    Inventors: Jamie Stokes, Andrew Patrick Baird, Fiona Isabel Bruce
  • Patent number: 6831612
    Abstract: The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarised systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12) and a cross-type metal feed body (32) coupled to the front of the waveguide housing (12). The feed body (32) has four peripherally spaced corrugated arm portions (34) arranged in a mutually orthogonal relationship, where the arm portions (34) extend radially outwardly from a longitudinal axis (16) of the feed body (32). Ridges (36) on each arm portion (34) are arranged concentrically around the axis (16) and parallel thereto, with successive ridges spaced from the axis (16) in a tiered arrangement. In another embodiment the antenna feed is a dielectric lens. The antenna feed is used in an antenna system having a reflector antenna in addition or in a low noise block (LNB) receiver.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: December 14, 2004
    Assignee: Channel Master Limited
    Inventors: Gerard King, Jamie Stokes
  • Publication number: 20040130406
    Abstract: There is disclosed herein a waveguide rotator for use with a dual polarization waveguide probe system. The waveguide has an internal structure that protrudes into the waveguide such that a first orthogonal component of the incident polarized signal propagates to the end of the waveguide and is reflected therefrom and the second orthogonally polarized component is cut-off by the protruding structure which narrows the waveguide, at a distance from a short circuit at the end of the waveguide, and is reflected substantially at the cut-off point, the cut-off point being frequency dependant. At some predetermined distance from the reflecting means and the cut-off point, the first component and the second component are recombined such that the polarization of the recombined structure is rotated 90° from the incident polarization. The protruding interior surface creates a pocket or cavity behind the waveguide into which components from a circuit board can be inserted.
    Type: Application
    Filed: October 10, 2003
    Publication date: July 8, 2004
    Applicant: Channel Master Limited
    Inventors: Andrew Patrick Baird, Jamie Stokes
  • Patent number: 6720932
    Abstract: A multi-frequency antenna feed for incorporation into a single unit which combines at least two waveguides to provide simultaneous reception and/or transmission of signals in at least two separate frequency bands is described. This is achieved by creating a waveguide system of at least two waveguides sharing the same central axis; a central conventional waveguide which also acts as a center conductor for an outer coaxial waveguide and feeding the outer coaxial waveguide from a non-circular side feed, orthogonal to the waveguide axis, to set up a uniform field in the outer coaxial waveguide. The feeds are adjusted so that the phase center for each frequency band is at the same point in the feed for the same dish. Various embodiments of the invention are described.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: April 13, 2004
    Assignee: Channel Master Limited
    Inventors: Stephen John Flynn, Gerard King, Andrew Patrick Baird, Jamie Stokes
  • Publication number: 20030132888
    Abstract: The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarised systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12) and a cross-type metal feed body (32) coupled to the front of the waveguide housing (12). The feed body (32) has four peripherally spaced corrugated arm portions (34) arranged in a mutually orthogonal relationship, where the arm portions (34) extend radially outwardly from a longitudinal axis (16) of the feed body (32). Ridges (36) on each arm portion (34) are arranged concentrically around the axis (16) and parallel thereto, with successive ridges spaced from the axis (16) in a tiered arrangement. In another embodiment the antenna feed is a dielectric lens. The antenna feed is used in an antenna system having a reflector antenna in addition or in a low noise block (LNB) receiver.
    Type: Application
    Filed: January 23, 2003
    Publication date: July 17, 2003
    Applicant: Channel Master Limited
    Inventors: Gerard King, Jamie Stokes
  • Patent number: 6549173
    Abstract: The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarized systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12) and a cross-type metal feed body (32) coupled to the front of the waveguide housing (12). The feed body (32) has four peripherally spaced corrugated arm portions (34) arranged in a mutually orthogonal relationship, where the arm portions (34) extend radially outwardly from a longitudinal axis (16) of the feed body (32). Ridges (36) on each arm portion (34) are arranged concentrically around the axis (16) and parallel thereto, with successive ridges spaced from the axis (16) in a tiered arrangement. In another embodiment the antenna feed is a dielectric lens. The antenna feed is used in an antenna system having a reflector antenna in addition or in a low noise block (LNB) receiver.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 15, 2003
    Assignee: Channel Master Limited
    Inventors: Gerard King, Jamie Stokes