Patents by Inventor Sankerlingam Rajendran

Sankerlingam Rajendran 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: 11317505
    Abstract: A conductive network fabrication process is provided and includes filling a hole formed in a substrate with dielectric material, laminating films of the dielectric material on either side of the substrate, opening a through-hole through the dielectric material at the hole, depositing a conformal coating of dielectric material onto an interior surface of the through-hole and executing seed layer metallization onto the conformal coating in the through-hole to form a seed layer extending continuously along an entire length of the through-hole.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: April 26, 2022
    Assignee: RAYTHEON COMPANY
    Inventors: Brian K. Atwood, Thang D. Nguyen, Sankerlingam Rajendran, Douglas R. Gentry, Walter B. Aschenbeck, Jr.
  • Publication number: 20210321511
    Abstract: A conductive network fabrication process is provided and includes filling a hole formed in a substrate with dielectric material, laminating films of the dielectric material on either side of the substrate, opening a through-hole through the dielectric material at the hole, depositing a conformal coating of dielectric material onto an interior surface of the through-hole and executing seed layer metallization onto the conformal coating in the through-hole to form a seed layer extending continuously along an entire length of the through-hole.
    Type: Application
    Filed: February 18, 2021
    Publication date: October 14, 2021
    Inventors: Brian K. Atwood, Thang D. Nguyen, Sankerlingam Rajendran, Douglas R. Gentry, Walter B. Aschenbeck, JR.
  • Patent number: 11096271
    Abstract: A conductive network fabrication process is provided and includes filling a hole formed in a substrate with dielectric material, laminating films of the dielectric material on either side of the substrate, opening a through-hole through the dielectric material at the hole, depositing a conformal coating of dielectric material onto an interior surface of the through-hole and executing seed layer metallization onto the conformal coating in the through-hole to form a seed layer extending continuously along an entire length of the through-hole.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: August 17, 2021
    Assignee: RAYTHEON COMPANY
    Inventors: Brian K. Atwood, Thang D. Nguyen, Sankerlingam Rajendran, Douglas R. Gentry, Walter B. Aschenbeck, Jr.
  • Patent number: 10727558
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: July 28, 2020
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Publication number: 20200153072
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10573948
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: February 25, 2020
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Publication number: 20190386371
    Abstract: A method for making a composite substrate circulator comprising disposing a plurality of sleeves about a plurality of rods, disposing the plurality of rods and the plurality of sleeves in a plurality of openings in a block to form an assembly, and dividing the assembly to form a plurality of plates. Each plate includes a portion of the plurality of sleeves and the plurality of rods. The magnetic saturation (4PiMs) values of the rods and sleeves are chosen to decrease radially (rod has the highest 4PiMs).
    Type: Application
    Filed: August 28, 2019
    Publication date: December 19, 2019
    Inventors: Mark B. Hanna, Sankerlingam Rajendran
  • Publication number: 20190363416
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Application
    Filed: August 6, 2019
    Publication date: November 28, 2019
    Applicant: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10431865
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: October 1, 2019
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10403958
    Abstract: A method for making a composite substrate circulator comprising disposing a plurality of sleeves about a plurality of rods, disposing the plurality of rods and the plurality of sleeves in a plurality of openings in a block to form an assembly, and dividing the assembly to form a plurality of plates. Each plate includes a portion of the plurality of sleeves and the plurality of rods. The magnetic saturation (4PiMs) values of the rods and sleeves are chosen to decrease radially (rod has the highest 4PiMs).
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 3, 2019
    Assignee: Raytheon Company
    Inventors: Mark B. Hanna, Sankerlingam Rajendran
  • Patent number: 10356914
    Abstract: A method of lamination of dielectric circuit materials is provided. The method includes preparing first and second circuit layers of dielectric materials, stacking the first and second circuit layers with circuit trace elements interposed between the first and second circuit layers and ultrasonically welding the second circuit layer onto the first circuit layer around the circuit trace elements.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: July 16, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: Patrick J. Kocurek, Sankerlingam Rajendran
  • Publication number: 20190027799
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Application
    Filed: August 20, 2018
    Publication date: January 24, 2019
    Applicant: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10096879
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: October 9, 2018
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Publication number: 20180175473
    Abstract: A method for making a composite substrate circulator comprising disposing a plurality of sleeves about a plurality of rods, disposing the plurality of rods and the plurality of sleeves in a plurality of openings in a block to form an assembly, and dividing the assembly to form a plurality of plates. The magnetic saturation (4PiMs) values of the rods and sleeves are chosen to decrease radially (rod has the highest 4PiMs). In addition, a method for making a composite substrate circulator component can include disposing a sleeve about a rod, and disposing the rod and the sleeve in an opening in a block to form an assembly. The rod and/or the sleeve can have a plurality of longitudinally spaced recesses. Additionally, the method can include dividing the assembly at the longitudinally spaced recesses to form a plurality of plates.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 21, 2018
    Inventors: Mark B. Hanna, Sankerlingam Rajendran
  • Patent number: 9899717
    Abstract: A stacked stripline circulator includes a first ferrite disc, a second ferrite disc, a first substrate having a metalized edge with the first ferrite disc disposed in the first substrate, a second substrate having a metalized edge with the second ferrite disc disposed in the second substrate, a first metalized pattern defining ports of a circulator disposed on the first substrate, the first metalized pattern comprising copper, a second metalized pattern defining ports of a circulator disposed on the second substrate, the second metalized pattern comprising copper, and a bonding ring bonding the metalized edge of the first substrate with the metalized edge of the second substrate.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: February 20, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: John M. Bedinger, Sankerlingam Rajendran
  • Publication number: 20170290172
    Abstract: A method of lamination of dielectric circuit materials is provided. The method includes preparing first and second circuit layers of dielectric materials, stacking the first and second circuit layers with circuit trace elements interposed between the first and second circuit layers and ultrasonically welding the second circuit layer onto the first circuit layer around the circuit trace elements.
    Type: Application
    Filed: October 21, 2016
    Publication date: October 5, 2017
    Inventors: Patrick J. Kocurek, Sankerlingam Rajendran
  • Publication number: 20170256836
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 7, 2017
    Applicant: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Publication number: 20170104256
    Abstract: A stacked stripling circulator includes a first ferrite disc, a second ferrite disc, a first substrate having a metalized edge with the first ferrite disc disposed in the first substrate, a second substrate having a metalized edge with the second ferrite disc disposed in the second substrate, a first metalized pattern defining ports of a circulator disposed on the first substrata, the first metalized pattern comprising copper, a second metalized pattern defining ports of a circulator disposed on the second substrate, the second metalized pattern comprising copper, and a bonding ring bonding the metalized edge of the first substrate with the metalized edge of the second substrate.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 13, 2017
    Applicant: RAYTHEON COMPANY
    Inventors: John M. Bedinger, Sankerlingam Rajendran
  • Patent number: 8963313
    Abstract: Integrating a semiconductor component with a substrate through a low loss interconnection formed through adaptive patterning includes forming a cavity in the substrate, placing the semiconductor component therein, filling a gap between the semiconductor component and substrate with a fill of same or similar dielectric constant as that of the substrate and adaptively patterning a low loss interconnection on the fill and extending between the contacts of the semiconductor component and the electrical traces on the substrate. The contacts and leads are located and adjoined using an adaptive patterning technique that places and forms a low loss radio frequency transmission line that compensates for any misalignment between the semiconductor component contacts and the substrate leads.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 24, 2015
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, Monte R. Sanchez, Susan M. Eshelman, Douglas R. Gentry, Thomas A. Hanft
  • Patent number: 7979144
    Abstract: According to one embodiment, a pattern forming system includes a patterning tool, a multi-axis robot, and a simulation tool that are coupled to a pattern forming tool that is executed on a suitable computing system. The pattern forming tool receives a contour measurement from the patterning tool and transmits the measured contour to the simulation tool to model the electrical characteristics of a conductive pattern or a dielectric pattern on the measured contour. Upon receipt of the modeled characteristics, the pattern forming system may adjust one or more dimensions of the pattern according to the model, and subsequently create, using the patterning tool, the corrected pattern on the surface.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: July 12, 2011
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, Billy D. Ables