Dielectric resonator and dielectric filter

Patent metadata

Field	Value
Publication number	US-10164309-B2
Application number	US-201615153560-A
Country	US
Kind code	B2
Filing date	May 12, 2016
Priority date	Nov 12, 2013
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

The present application provides a dielectric filter, including a body part, a dielectric resonator, a cavity is formed in the body part, and a support kit is disposed at a bottom of the cavity. The dielectric resonator, including a dielectric body and at least two adjusting holes disposed on the dielectric body, is contained in the cavity and is disposed on the support kit. The dielectric body has a first mirror plane and a second mirror plane, which are perpendicular to each other and penetrate through the top plane and the bottom plane of the dielectric body, and any two of the at least two adjusting holes are not mirror symmetric relative to the first mirror plane or the second mirror plane.

First claim

What is claimed is:

1. A dielectric resonator, disposed in a cavity of a dielectric filter, wherein the dielectric resonator is physically separate from an outer body of the dielectric filter, wherein the dielectric resonator is a dual-mode dielectric resonator and is configured to support a Hybrid Electromagnetic (HE) mode, and the dielectric resonator comprises a dielectric body;
wherein at least two holes are disposed on the dielectric body and the dielectric body comprises a top plane and a bottom plane;
wherein the at least two holes penetrate through the top plane and the bottom plane of the dielectric body;
wherein the dielectric body has a first mirror plane and a second mirror plane, and the second mirror plane and the first mirror plane are perpendicular to each other and both penetrate through the top plane and the bottom plane of the dielectric body; and
wherein the at least two holes are not mirror symmetric relative to the first mirror plane and the second mirror plane.

2. The dielectric resonator according to claim 1 , wherein the dielectric body has a first diagonal plane and a second diagonal plane, and axes of the at least two holes are separately on the first diagonal plane and the second diagonal plane or are both on one diagonal plane of the first diagonal plane and the second diagonal plane.

3. The dielectric resonator according to claim 2 , wherein the dielectric body is a cylinder, the first diagonal plane and the second diagonal plane are perpendicular to each other, and sector planes of two adjacent included angles formed between the first diagonal plane and the second diagonal plane are planes on which axes of a first port and a second port of the dielectric filter are separately located.

4. The dielectric resonator according to claim 2 , wherein the first mirror plane is a plane on which an axis of a first port of the dielectric filter is located, and the second mirror plane is a plane on which an axis of a second port of the dielectric filter is located.

5. The dielectric resonator according to claim 2 , wherein the at least two holes comprise a first hole and a second hole, and an axis of the first hole is on the first diagonal plane, an axis of the second hole is on the second diagonal plane, or the axes of the first hole and the second hole are both on the second diagonal plane.

6. The dielectric resonator according to claim 5 , wherein the at least two holes further comprise a third hole, and an axis of the third hole is on the second diagonal plane and is parallel with the axis of the second hole.

7. The dielectric resonator according to claim 6 , wherein the at least two holes further comprise a fourth hole, and an axis of the fourth hole is on the first diagonal plane and is parallel with the axis of the first hole.

8. The dielectric resonator according to claim 7 , wherein the first to the fourth holes are cylindrical holes, and a hole size of the first hole is the same as a hole size of the fourth hole, a hole size of the second hole is the same as a hole size of the third hole, and the hole size of the first hole is different from the hole size of the second hole.

9. The dielectric resonator according to claim 5 , wherein the at least two holes further comprise a fifth hole, and an axis of the fifth hole is an intersection line of the first diagonal plane and the second diagonal plane.

10. The dielectric resonator according to claim 5 , wherein the axis of the second hole is an intersection line of the first diagonal plane and the second diagonal plane.

11. The dielectric resonator according to claim 10 , wherein the second hole is connected to the first hole.

12. A dielectric filter, comprising a body part, a cover, and a first dielectric resonator, wherein the first dielectric resonator is a dual-mode dielectric resonator and is configured to support a Hybrid Electromagnetic (HE) mode;
wherein the body part comprises a first port and a second port, and the first port and the second port are configured to input and output signals;
wherein a first cavity is further formed in the body part, and a first support kit is disposed at a bottom of the first cavity;
wherein the first dielectric resonator is disposed in the first cavity of the dielectric filter and is physically separate from an outer body of the dielectric filter;
wherein the first dielectric resonator comprises a dielectric body, wherein at least two holes are disposed on the dielectric body and the dielectric body comprises a top plane and a bottom plane, wherein the at least two holes penetrate through the top plane and the bottom plane of the dielectric body;
wherein the dielectric body has a first mirror plane and a second mirror plane, and the second mirror plane and the first mirror plane are perpendicular to each other and both penetrate through the top plane and the bottom plane of the dielectric body; and
wherein the at least two holes are not mirror symmetric relative to the first mirror plane and the second mirror plane.

13. The dielectric filter according to claim 12 , wherein an axis of the first port is on the first mirror plane, and an axis of the second port is on the second mirror plane.

14. The dielectric filter according to claim 12 , wherein the dielectric body in the first dielectric resonator comprises a first diagonal plane and a second diagonal plane, and axes of the at least two holes are separately on the first diagonal plane and the second diagonal plane or are both on one diagonal plane of the first diagonal plane and the second diagonal plane.

15. The dielectric filter according to claim 14 , wherein the at least two holes in the first dielectric resonator comprise a first hole and a second hole, and an axis of the first hole is on the first diagonal plane, an axis of the second hole is on the second diagonal plane, or the axes of the first hole and the second hole are both on the second diagonal plane.

16. The dielectric filter according to claim 15 , wherein screws are arranged in positions that are on the cover and correspond to the first hole and the second hole, for adjusting at least one of a frequency and bandwidth of the dielectric filter.

17. The dielectric filter according to claim 15 , wherein the at least two holes in the first dielectric resonator further comprise a third hole, and an axis of the third hole is on the second diagonal plane and is parallel with the axis of the second hole.

18. The dielectric filter according to claim 12 , wherein the dielectric filter further comprises a second dielectric resonator and a coupled mechanical part;
wherein a second cavity is further formed in the dielectric filter, and a second support kit is disposed at a bottom of the second cavity;
wherein the second dielectric resonator is contained in the second cavity and is disposed on the second support kit; and
wherein the second dielectric resonator is connected to the first dielectric resonator by using the coupled mechanical part.

19. A dielectric filter, comprising a body part, a cover and a dielectric resonator, wherein the dielectric resonator is a dual-mode dielectric resonator configured to support a Hybrid Electromagnetic (HE) mode;
wherein the body part comprises a first port and a second port, and the first port and the second port are configured to input and output signals;
wherein a first cavity is further formed in the body part, and a first support kit is disposed at a bottom of the first cavity;
wherein the dielectric resonator is disposed in the first cavity of the dielectric filter and is

Assignees

• Huawei Tech Co Ltd
• Huawei Tech Co Ltd

Inventors

• Pu Guosheng
• Song Yanlin
• Shen Zhen
• Shi Jing

Classifications

• H01P7/105

  Multimode resonators · CPC title

• H01P1/2086 Primary

  multimode · CPC title

• H01P1/2084

  with dielectric resonators · CPC title

• H01P7/10

  Dielectric resonators · CPC title

• H01P1/2002

  Dielectric waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence) · CPC title