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公开(公告)号：US10573948B2
公开(公告)日：2020-02-25
申请号：US16532879
申请日：2019-08-06
Applicant: Raytheon Company
Inventor： Sankerlingam Rajendran , James A. Carr , Cary C. Kyhl , Karl L. Worthen
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.
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公开(公告)号：US20190363416A1
公开(公告)日：2019-11-28
申请号：US16532879
申请日：2019-08-06
Applicant: Raytheon Company
Inventor： Sankerlingam Rajendran , James A. Carr , Cary C. Kyhl , Karl L. Worthen
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.
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公开(公告)号：US11317505B2
公开(公告)日：2022-04-26
申请号：US17178945
申请日：2021-02-18
Applicant: RAYTHEON COMPANY
Inventor： Brian K. Atwood , Thang D. Nguyen , Sankerlingam Rajendran , Douglas R. Gentry , Walter B. Aschenbeck, Jr.
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.
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公开(公告)号：US11096271B1
公开(公告)日：2021-08-17
申请号：US16844586
申请日：2020-04-09
Applicant: RAYTHEON COMPANY
Inventor： Brian K. Atwood , Thang D. Nguyen , Sankerlingam Rajendran , Douglas R. Gentry , Walter B. Aschenbeck, Jr.
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.
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公开(公告)号：US20200153072A1
公开(公告)日：2020-05-14
申请号：US16743180
申请日：2020-01-15
Applicant: Raytheon Company
Inventor： Sankerlingam Rajendran , James A. Carr , Cary C. Kyhl , Karl L. Worthen
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.
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Patent Agency Ranking
公开(公告)号：US09899717B2
公开(公告)日：2018-02-20
申请号：US14881853
申请日：2015-10-13
Applicant: RAYTHEON COMPANY
Inventor： John M. Bedinger , Sankerlingam Rajendran
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.
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公开(公告)号：US20190386371A1
公开(公告)日：2019-12-19
申请号：US16554408
申请日：2019-08-28
Applicant: Raytheon Company
Inventor： Mark B. Hanna , Sankerlingam Rajendran
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).
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公开(公告)号：US10431865B2
公开(公告)日：2019-10-01
申请号：US15999435
申请日：2018-08-20
Applicant: Raytheon Company
Inventor： Sankerlingam Rajendran , James A. Carr , Cary C. Kyhl , Karl L. Worthen
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.
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公开(公告)号：US10403958B2
公开(公告)日：2019-09-03
申请号：US15384200
申请日：2016-12-19
Applicant: Raytheon Company
Inventor： Mark B. Hanna , Sankerlingam Rajendran
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).
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公开(公告)号：US10356914B2
公开(公告)日：2019-07-16
申请号：US15331307
申请日：2016-10-21
Applicant: Raytheon Company
Inventor： Patrick J. Kocurek , Sankerlingam Rajendran
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.
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