公开(公告)号：US20190027799A1

公开(公告)日：2019-01-24

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

IPC: H01P1/387 ,  H01P1/383

CPC classification number: H01P1/387 ,  H01F7/0205 ,  H01P1/383

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.

公开(公告)号：US20170256836A1

公开(公告)日：2017-09-07

申请号：US15062686

申请日：2016-03-07

Applicant: Raytheon Company

Inventor： Sankerlingam Rajendran ,  James A. Carr ,  Cary C. Kyhl ,  Karl L. Worthen

IPC: H01P1/387

CPC classification number: H01P1/387 ,  H01F7/0205 ,  H01P1/383

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.

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

IPC: H01P1/38 ,  H01P1/387 ,  H01P1/383 ,  H01F7/02

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.

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

IPC: H01P1/387 ,  H01P1/383

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.