公开(公告)号：JP2002151920A

公开(公告)日：2002-05-24

申请号：JP2001260398

申请日：2001-08-29

Applicant: COM DEV LTD

Inventor： FITZPATRICK WILLIAM ,  YU MING ,  SMITH DAVID ,  SIVADAS APU

IPC: H01P7/06 ,  H01P1/208 ,  H01P1/30

Abstract: PROBLEM TO BE SOLVED: To provide a microwave resonator having an external temperature compensation device that is not susceptible to a thermal effect. SOLUTION: The microwave resonator with a cavity having a specific volume has an external temperature compensation structure. The temperature compensation structure is formed on a wall of the microwave resonator. When the microwave resonator and the temperature compensation structure are subjected to distortion caused by heat, the temperature compensation structure applies a restoring force to the wall of the microwave resonator so as to distort the wall oppositely against the distortion caused by the heat thereto maintain the specific volume of the cavity.

公开(公告)号：DE60143733D1

公开(公告)日：2011-02-10

申请号：DE60143733

申请日：2001-08-28

Applicant: COM DEV LTD

Inventor： FITZPATRICK WILLIAM ,  YU MING ,  SMITH DAVID ,  SIVADAS APU

IPC: H01P1/208 ,  H01P7/06 ,  H01P1/30

公开(公告)号：DE60130847T2

公开(公告)日：2008-07-17

申请号：DE60130847

申请日：2001-08-28

Applicant: COM DEV LTD

Inventor： SIVADAS APU ,  YU MING ,  SMITH DAVID ,  FITZPATRICK WILLIAM

IPC: H01P1/208

Abstract: A microwave filter has a set of irises to couple cavities within the filter. A trifurcated iris comprises a central iris and a pair of peripheral irises. The peripheral irises are configured and oriented to couple a primary mode having a magnetic field in the axial direction of a filter cavity. The central iris is configured and oriented to couple a secondary mode having a magnetic field in the azimuthal direction of the filter cavity. The configuration of the trifurcated iris is further oriented to minimize the influence of higher order signals such as the TE21X mode. The peripheral iris are oriented at null points of the primary TE21X mode and the central iris is also located at a null point. An input and an output iris are configured to receive electromagnetic energy in the axial direction of the filter. The input and output irises are oriented to minimize signals in the TE21X secondary mode and any TM modes.

公开(公告)号：DE60130847D1

公开(公告)日：2007-11-22

申请号：DE60130847

申请日：2001-08-28

Applicant: COM DEV LTD

Inventor： SIVADAS APU ,  YU MING ,  SMITH DAVID ,  FITZPATRICK WILLIAM

IPC: H01P1/208

Abstract: A microwave filter has a set of irises to couple cavities within the filter. A trifurcated iris comprises a central iris and a pair of peripheral irises. The peripheral irises are configured and oriented to couple a primary mode having a magnetic field in the axial direction of a filter cavity. The central iris is configured and oriented to couple a secondary mode having a magnetic field in the azimuthal direction of the filter cavity. The configuration of the trifurcated iris is further oriented to minimize the influence of higher order signals such as the TE21X mode. The peripheral iris are oriented at null points of the primary TE21X mode and the central iris is also located at a null point. An input and an output iris are configured to receive electromagnetic energy in the axial direction of the filter. The input and output irises are oriented to minimize signals in the TE21X secondary mode and any TM modes.

公开(公告)号：CA2356139C

公开(公告)日：2005-03-29

申请号：CA2356139

申请日：2001-08-28

Applicant: COM DEV LTD

Inventor： YU MING ,  FITZPATRICK WILLIAM ,  SMITH DAVID ,  SIVADAS APU

IPC: H01P1/208 ,  H01P1/20 ,  H01P5/00

Abstract: A microwave filter has a set of irises to couple cavities within the filter. A trifurcated iris comprises a central iris and a pair of peripheral irises. The peripheral irises are configured and oriented to couple a primary mode having a magnetic field in the axial direction of a filter cavity. The central iris is configured and oriented to couple a secondary mode havin g a magnetic field in the azimuthal direction of the filter cavity. The configuration of the trifurcated iris is further oriented to minimize the influence of higher order signals such as the TE21x mode. The peripheral iris are oriented at null points of the primary TE21x mode and th e central iris is also located at a null point. An input and an output iris are configured to recei ve electromagnetic energy in the axial direction of the filter. The input and output irises are oriented to minimize signals in the TE21x secondary mode and any TM modes.

公开(公告)号：CA2356139A1

公开(公告)日：2002-02-28

申请号：CA2356139

申请日：2001-08-28

Applicant: COM DEV LTD

Inventor： SMITH DAVID ,  FITZPATRICK WILLIAM ,  SIVADAS APU ,  YU MING

IPC: H01P1/208 ,  H01P1/20 ,  H01P5/00

Abstract: A microwave filter has a set of irises to couple cavities within the filter. A trifurcated iris comprises a central iris and a pair of peripheral irises. The peripheral irises are configured and oriented to couple a primary mode having a magnetic field in the axial direction of a filter cavity. The central iris is configured and oriented to couple a secondary mode havin g a magnetic field in the azimuthal direction of the filter cavity. The configuration of the trifurcated iris is further oriented to minimize the influence of higher order signals such as the TE21x mode. The peripheral iris are oriented at null points of the primary TE21x mode and th e central iris is also located at a null point. An input and an output iris are configured to recei ve electromagnetic energy in the axial direction of the filter. The input and output irises are oriented to minimize signals in the TE21x secondary mode and any TM modes.