CN113394538B

CN113394538B - Resonant cavity structure, resonator, filter and communication device

Info

Publication number: CN113394538B
Application number: CN202110648904.5A
Authority: CN
Inventors: 谢懿非; 丁海; 孟弼慧
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2023-01-31
Anticipated expiration: 2041-06-10
Also published as: CN113394538A

Abstract

The invention relates to a resonant cavity structure, a resonator, a filter and a communication device. The center of the projection of the first coupling window on one of the side surfaces of the metal resonator block is located on one side of the first line Z1, the center of the projection of the third coupling window on one of the side surfaces of the metal resonator block is located on one side of the second line Z2, and the center of the projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on one side of the third line Z3. The filter comprising the resonant cavity structure is simulated, and the zero point can be generated at the low end and/or the high end of the pass band according to a simulation diagram. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, insertion loss is reduced; in addition, the reliability in normal temperature and high and low temperature environments is improved; in addition, the weight of the product is reduced, and the product competition rate is improved.

Description

Resonant cavity structure, resonator, filter and communication device

Technical Field

The invention relates to the technical field of communication products, in particular to a resonant cavity structure, a resonator, a filter and a communication device.

Background

The filter is a frequency-selective device and is an indispensable part of the communication apparatus. With the rapid development of communication systems, the 5G era has entered. The mutual interference between the frequency bands of the filter is increasing, which requires stronger suppression to deal with the interference from different frequency bands, and at the same time, how to reduce the insertion loss of the filter is a difficult problem to be solved. Under the background, the introduction of the high-Q-value TE mode dielectric resonator can enable the filter to achieve strong suppression and reduce insertion loss at the same time. Because the cost of the TE mode dielectric resonator is relatively high, if the filter is made by using full TE mode resonance, the cost of the filter product will be greatly increased.

Conventionally, in order to achieve both cost and performance, a filter is often manufactured by mixing a TE mode dielectric resonator and a metal resonator. For the mixed structure of the TE mode dielectric resonator and the metal resonator, the implementation manner of cross coupling is usually to set windows on the wall plates of two adjacent metal resonators, and to add a flying bar form in the windows, so that the zero point can be generated at the low end (i.e. the left end) or the high end (i.e. the right end) of the pass band. However, for the filter manufactured by mixing the TE mode dielectric resonator and the metal resonator, the device still has the defects of high cost, heavy weight, low production efficiency and poor stability in high and low temperature environments.

Disclosure of Invention

Accordingly, there is a need to overcome the drawbacks of the prior art and to provide a resonator structure, a resonator, a filter and a communication device, which can reduce the cost and weight of the product, improve the production efficiency and improve the stability in high and low temperature environments.

The technical scheme is as follows: a resonant cavity structure, the resonant cavity structure comprising: the metal resonator block is provided with a first concave part, a second concave part, a third concave part and a fourth concave part on one side surface; the first concave part, the second concave part and the fourth concave part are arranged adjacently in pairs, and the second concave part, the third concave part and the fourth concave part are arranged adjacently in pairs; the first concave part is used for installing a first metal resonator, the second concave part is used for installing a first dielectric resonator, the third concave part is used for installing a second dielectric resonator, and the fourth concave part is used for installing a second metal resonator; wherein the wall panel between the first recess and the second recess that separates the first recess from the second recess is a first wall panel, the wall panel between the first recess and the fourth recess that separates the first recess from the fourth recess is a second wall panel, the wall panel between the second recess and the fourth recess that separates the second recess from the fourth recess is a third wall panel, the wall panel between the second recess and the third recess that separates the second recess from the third recess is a fourth wall panel, and the wall panel between the third recess and the fourth recess that separates the third recess from the fourth recess is a fifth wall panel; a first coupling window is arranged on the first wall plate, a second coupling window is arranged on the second wall plate, a third coupling window is arranged on the third wall plate, a fourth coupling window is arranged on the fourth wall plate, and a fifth coupling window is arranged on the fifth wall plate; defining a first connecting line Z1 as a connecting line of the center of the projection of the first metal resonator on one side surface of the metal resonant block and the center of the projection of the first dielectric resonator on one side surface of the metal resonant block; defining a second connecting line Z2 as a connecting line between the center of the projection of the first dielectric resonator on one of the side surfaces of the metal resonator block and the center of the projection of the second metal resonator on one of the side surfaces of the metal resonator block; defining a third line Z3 as a line connecting the center of projection of the second dielectric resonator on one of the side surfaces of the metal resonator block and the center of projection of the second metal resonator on one of the side surfaces of the metal resonator block; the center of projection of the first coupling window on one of the side surfaces of the metal resonator block is located on the side of the first connection line Z1, the center of projection of the third coupling window on one of the side surfaces of the metal resonator block is located on the side of the second connection line Z2, and the center of projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on the side of the third connection line Z3.

In the resonant cavity structure, the first concave part, the second concave part and the fourth concave part are arranged adjacent to each other in pairs, the second concave part, the third concave part and the fourth concave part are arranged adjacent to each other in pairs, in addition, the center of the projection of the first coupling window on the surface of one side of the metal resonant block is positioned on one side of the first connecting line Z1, the center of the projection of the third coupling window on the surface of one side of the metal resonant block is positioned on one side of the second connecting line Z2, and the center of the projection of the fifth coupling window on the surface of one side of the metal resonant block is positioned on one side of the third connecting line Z3. The filter comprising the resonant cavity structure is simulated, and the zero point can be generated at the low end and/or the high end of the passband according to a simulation diagram. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, insertion loss is reduced; in addition, the reliability in normal temperature and high and low temperature environments is improved; in addition, the weight of the product is reduced, and the product competition rate is improved.

In one embodiment, the projection of the first coupling window on one of the lateral surfaces of the metal resonator block is located on one side of the first connection line Z1; and/or the projection of the third coupling window on one side surface of the metal resonance block is positioned on one side of the second connecting line Z2; and/or the projection of the fifth coupling window on one side surface of the metal resonator block is positioned on one side of the third connecting line Z3.

In one of the embodiments, the projection of the first coupling window on one of the lateral surfaces of the metallic resonator block is located on the side of the first line Z1 remote from the second wall panel, and the projection of the fifth coupling window on one of the lateral surfaces of the metallic resonator block is located on the side of the third line Z3 remote from the fourth wall panel; alternatively, a projection of the first coupling window on one of the side surfaces of the metal resonator block is located on a side of the first line Z1 adjacent to the second wall plate, and a projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on a side of the third line Z3 adjacent to the fourth wall plate.

In one embodiment, the projection of the first coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the first connecting line Z1 remote from the second wall plate, the projection of the third coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the second connecting line Z2 remote from the fourth wall plate, and the projection of the fifth coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the third connecting line Z3 remote from the fourth wall plate;

or, the projection of the first coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the first line Z1 close to the second wall plate, the projection of the third coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the second line Z2 close to the fourth wall plate, and the projection of the fifth coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the third line Z3 close to the fourth wall plate;

or, the projection of the first coupling window on one of the side surfaces of the metal resonator block is located on the side of the first connecting line Z1 away from the second wall plate, the projection of the third coupling window on one of the side surfaces of the metal resonator block is located on the side of the second connecting line Z2 close to the fourth wall plate, and the projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on the side of the third connecting line Z3 away from the fourth wall plate;

alternatively, a projection of the first coupling window on one of the side surfaces of the metal resonator block is located on a side of the first line Z1 close to the second wall plate, a projection of the third coupling window on one of the side surfaces of the metal resonator block is located on a side of the second line Z2 away from the fourth wall plate, and a projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on a side of the third line Z3 close to the fourth wall plate.

In one embodiment, the projection of the first coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the first line Z1 close to the second wall plate, and the projection of the fifth coupling window on one of the lateral surfaces of the metal resonator block is located on the side of the third line Z3 away from the fourth wall plate; alternatively, the projection of the first coupling window on one of the side surfaces of the metal resonator block is located on the side of the first line Z1 remote from the second wall plate, and the projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on the side of the third line Z3 close to the fourth wall plate.

In one embodiment, a fifth concave part is arranged on one side surface of the metal resonance block; the third concave part, the fourth concave part and the fifth concave part are arranged adjacent to each other in pairs; the fifth concave part is used for installing a third metal resonator; wherein the wall panel between the third recess and the fifth recess separating the third recess from the fifth recess is a sixth wall panel, and the wall panel between the fourth recess and the fifth recess separating the fourth recess from the fifth recess is a seventh wall panel; and a sixth coupling window is arranged on the seventh wall plate.

A resonator comprises the resonant cavity structure, and further comprises a first metal resonator, a first dielectric resonator, a second dielectric resonator and a second metal resonator; the first metal resonator is disposed in the first recess, the first dielectric resonator is disposed in the second recess, the second dielectric resonator is disposed in the third recess, and the second metal resonator is disposed in the fourth recess.

In the resonator, the first concave part, the second concave part and the fourth concave part are arranged adjacent to each other in pairs, the second concave part, the third concave part and the fourth concave part are arranged adjacent to each other in pairs, in addition, the center of the projection of the first coupling window on one side surface of the metal resonance block is positioned on one side of the first connecting line Z1, the center of the projection of the third coupling window on one side surface of the metal resonance block is positioned on one side of the second connecting line Z2, and the center of the projection of the fifth coupling window on one side surface of the metal resonance block is positioned on one side of the third connecting line Z3. The filter comprising the resonant cavity structure is simulated, and the zero point can be generated at the low end and/or the high end of the passband according to a simulation diagram. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, insertion loss is reduced; in addition, the reliability in normal temperature and high and low temperature environments is improved; in addition, the weight of the product is reduced, and the product competition rate is improved.

In one embodiment, the resonator further comprises a metal cover plate covering one side surface of the metal resonance block; the first metal resonator comprises a first metal resonance rod arranged in the first concave part and a first metal tuning rod arranged on the metal cover plate in a position-adjustable manner; the first dielectric resonator comprises a first dielectric resonance rod arranged in the second concave part and a first dielectric tuning disc arranged on the metal cover plate in a position-adjustable mode; the second dielectric resonator comprises a second dielectric resonance rod arranged in the third concave part and a second dielectric tuning disc arranged on the metal cover plate in a position-adjustable manner; the second metal resonator comprises a second metal resonance rod arranged in the fourth concave part and a second metal tuning rod arranged on the metal cover plate in a position-adjustable mode.

In one embodiment, the first dielectric resonator further comprises a first insulating support structure disposed on the bottom wall of the second recess, and the first dielectric resonance rod is mounted on the first insulating support structure; the first dielectric tuning disc is arranged on the metal cover plate in a position-adjustable manner through a first insulating adjusting rod; the second dielectric resonator further comprises a second insulating support structure arranged on the bottom wall of the third concave part, and the second dielectric resonance rod is arranged on the second insulating support structure; the second dielectric tuning disc is arranged on the metal cover plate in a position-adjustable mode through a second insulating adjusting rod.

In one embodiment, a first metal adjusting rod with adjustable position is arranged on the metal cover plate, and the first metal adjusting rod extends into the first coupling window; a second metal adjusting rod with adjustable position is arranged on the metal cover plate and extends into the second coupling window; a third metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the third coupling window; a fourth metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the fourth coupling window; and a fifth metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the fifth coupling window.

A filter comprising said resonator.

A communication device comprising said filter.

In the filter and the communication device, the first concave part, the second concave part and the fourth concave part are arranged adjacent to each other in pairs, the second concave part, the third concave part and the fourth concave part are arranged adjacent to each other in pairs, in addition, the center of the projection of the first coupling window on one side surface of the metal resonator block is positioned on one side of the first connecting line Z1, the center of the projection of the third coupling window on one side surface of the metal resonator block is positioned on one side of the second connecting line Z2, and the center of the projection of the fifth coupling window on one side surface of the metal resonator block is positioned on one side of the third connecting line Z3. The filter comprising the resonant cavity structure is simulated, and the zero point can be generated at the low end and/or the high end of the passband according to a simulation diagram. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, insertion loss is reduced; in addition, the reliability in normal temperature and high and low temperature environments is improved; in addition, the weight of the product is reduced, and the product competition rate is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a resonator according to an embodiment of the present invention, in which a metal cover plate is separated;

FIG. 2 is a schematic structural diagram of a resonant cavity structure according to an embodiment of the present invention;

fig. 3 is a schematic top view of a resonator according to an embodiment of the present invention with a metal cover hidden;

FIG. 4 is a schematic top view of a resonator according to another embodiment of the present invention with a metal cover hidden;

FIG. 5 is a schematic top view of a resonator according to another embodiment of the present invention with a metal cover hidden;

FIG. 6 is a schematic top view of a resonator according to yet another embodiment of the present invention with a metal cover hidden;

FIG. 7 is a schematic top view of a resonator according to still another embodiment of the present invention with a metal cover hidden;

FIG. 8 is a schematic top view of a resonator according to still another embodiment of the present invention with a metal cover hidden;

FIG. 9 is a schematic top view of a resonator according to still another embodiment of the present invention with a metal cover hidden;

FIG. 10 is a schematic top view of a resonator according to still another embodiment of the present invention with a metal cover hidden;

FIG. 11 is a schematic top view of a resonator according to an embodiment of the present invention;

FIG. 12 isbase:Sub>A cross-sectional structural view at A-A of FIG. 11;

FIG. 13 is a cross-sectional structural view at B-B of FIG. 11;

FIG. 14 is a graph of the response of the resonator shown in FIG. 3;

FIG. 15 is a graph of the response of the resonator shown in FIG. 4;

FIG. 16 is a graph of the response of the resonator shown in FIG. 5;

FIG. 17 is a graph of the response of the resonator shown in FIG. 6;

FIG. 18 is a graph of the response of the resonator shown in FIG. 7;

FIG. 19 is a graph of the response of the resonator shown in FIG. 8;

FIG. 20 is a graph of the response of the resonator shown in FIG. 9;

FIG. 21 is a graph of the response of the resonator shown in FIG. 10;

fig. 22 is a schematic view showing a structure in which a flying bar is provided at the second coupling window shown in fig. 5.

10. A metal resonator block; 11. a first recess; 12. a second recess; 13. a third recess; 14. a fourth recess; 151. a first wall panel; 1511. a first coupling window; 152. a second wall panel; 1521. a second coupling window; 153. a third wall panel; 1531. a third coupling window; 154. a fourth wall panel; 1541. a fourth coupling window; 155. a fifth wall panel; 1551. a fifth coupling window; 156. a sixth wall panel; 157. a seventh wallboard; 1571. a sixth coupling window; 16. a fifth recess; 17. a signal input terminal; 18. a signal output terminal; 20. a first metal resonator; 21. a first metal resonance rod; 22. a first metal tuning rod; 30. a first dielectric resonator; 31. a first dielectric resonant rod; 32. a first media tuning disk; 33. a first insulating support structure; 34. a first insulating adjustment rod; 40. a second dielectric resonator; 41. a second dielectric resonant rod; 42. a second media tuning disc; 43. a second insulating support structure; 44. a second insulating adjusting rod; 50. a second metal resonator; 51. a second metal resonance rod; 52. a second metal tuning rod; 60. a third metal resonator; 70. a metal cover plate; 71. a first threaded hole; 72. a second threaded hole; 73. a third threaded hole; 74. a fourth threaded hole; 75. a fifth threaded hole; 76. a sixth threaded hole; 77. a seventh threaded hole; 78. an eighth threaded hole; 79. a ninth threaded hole; 81. a first metal adjusting rod; 82. a second metal adjusting rod; 83. a third metal adjusting rod; 84. a fourth metal adjusting rod; 85. a fifth metal adjusting rod; 90. and (4) flying rods.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 3, fig. 1 shows a schematic structural diagram of a resonator according to an embodiment of the present invention with a metal cover plate 70 separated, fig. 2 shows a schematic structural diagram of a resonant cavity according to an embodiment of the present invention, and fig. 3 shows a schematic structural diagram of a resonator according to an embodiment of the present invention with a metal cover plate 70 hidden from top view. According to an embodiment of the present invention, a resonant cavity structure includes a metal resonant block 10. One side surface of the metal resonator block 10 is provided with a first recess 11, a second recess 12, a third recess 13, and a fourth recess 14. The first concave portion 11, the second concave portion 12, and the fourth concave portion 14 are disposed adjacent to each other two by two, and the second concave portion 12, the third concave portion 13, and the fourth concave portion 14 are disposed adjacent to each other two by two. First recess 11 is for mounting first metal resonator 20, second recess 12 is for mounting first dielectric resonator 30, third recess 13 is for mounting second dielectric resonator 40, and fourth recess 14 is for mounting second metal resonator 50. The wall plate located between the first recess 11 and the second recess 12 and separating the first recess 11 from the second recess 12 is a first wall plate 151, the wall plate located between the first recess 11 and the fourth recess 14 and separating the first recess 11 from the fourth recess 14 is a second wall plate 152, the wall plate located between the second recess 12 and the fourth recess 14 and separating the second recess 12 from the fourth recess 14 is a third wall plate 153, the wall plate located between the second recess 12 and the third recess 13 and separating the second recess 12 from the third recess 13 is a fourth wall plate 154, and the wall plate located between the third recess 13 and the fourth recess 14 and separating the third recess 13 from the fourth recess 14 is a fifth wall plate 155. A first coupling window 1511 is disposed on the first wall plate 151, a second coupling window 1521 is disposed on the second wall plate 152, a third coupling window 1531 is disposed on the third wall plate 153, a fourth coupling window 1541 is disposed on the fourth wall plate 154, and a fifth coupling window 1551 is disposed on the fifth wall plate 155.

Referring to fig. 3, a line connecting the center of the projection of the first metal resonator 20 on one of the side surfaces of the metal resonator block 10 and the center of the projection of the first dielectric resonator 30 on one of the side surfaces of the metal resonator block 10 is defined as a first line Z1. A line connecting the center of the projection of the first dielectric resonator 30 on one of the side surfaces of the metal resonator block 10 and the center of the projection of the second metal resonator 50 on one of the side surfaces of the metal resonator block 10 is defined as a second line Z2. A third line Z3 is defined as a line connecting the center of the projection of the second dielectric resonator 40 on one of the side surfaces of the metal resonator block 10 and the center of the projection of the second metal resonator 50 on one of the side surfaces of the metal resonator block 10.

Referring to fig. 3 to 10, a center of a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is positioned at one side of the first line Z1, a center of a projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is positioned at one side of the second line Z2, and a center of a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is positioned at one side of the third line Z3.

It should be noted that, since the first recess 11 is used for installing the first metal resonator 20, that is, the first recess 11 corresponds to a metal resonant cavity; since the second recess 12 is used for installing the first dielectric resonator 30, that is, the second recess 12 corresponds to a dielectric resonant cavity; since the third recess 13 is used for installing the second dielectric resonator 40, that is, the third recess 13 corresponds to another dielectric resonant cavity; since the fourth recess 14 is used to mount the second metal resonator 50, that is, the fourth recess 14 is equivalent to another metal resonator.

It should be noted that the metal resonator block 10 may be of a metal structure as a whole, or may be obtained by providing a metal layer on the entire outer surface of the dielectric block (the entire outer surface refers to a surface of the dielectric block exposed to the outside, and includes both the wall surface of the recess and the wall surface of the coupling window).

Note that, the first concave portion 11, the second concave portion 12, and the fourth concave portion 14 are provided adjacent to each other two by two, which means that the first concave portion 11 is provided adjacent to the second concave portion 12 and the fourth concave portion 14, respectively, the second concave portion 12 is provided adjacent to the first concave portion 11 and the fourth concave portion 14, respectively, and the fourth concave portion 14 is provided adjacent to the first concave portion 11 and the second concave portion 12, respectively.

Similarly, the second concave portion 12, the third concave portion 13, and the fourth concave portion 14 are disposed adjacent to each other two by two, that is, the second concave portion 12 is disposed adjacent to the third concave portion 13 and the fourth concave portion 14, the third concave portion 13 is disposed adjacent to the second concave portion 12 and the fourth concave portion 14, and the fourth concave portion 14 is disposed adjacent to the second concave portion 12 and the third concave portion 13.

As an example, based on the first recess 11, the second recess 12 and the fourth recess 14 being disposed adjacent to each other two by two, the first wall panel 151, the second wall panel 152 and the third wall panel 153 intersect together at a point; the included angle between the first wall panel 151 and the second wall panel 152 is, for example, 110 ° to 130 °, specifically, 120 °; the included angle between the first wall panel 151 and the third wall panel 153 is, for example, 110 ° to 130 °, specifically, 120 °; the included angle between the second wall plate 152 and the third wall plate 153 is, for example, 110 ° to 130 °, specifically, for example, 120 °.

As an example, the third wall plate 153, the fourth wall plate 154 and the fifth wall plate 155 commonly intersect at a point based on that the second recess 12, the third recess 13 and the fourth recess 14 are disposed adjacent to each other two by two; the included angle between the third wall panel 153 and the fourth wall panel 154 is, for example, 110 ° to 130 °, specifically, 120 °; the included angle between the third wall plate 153 and the fifth wall plate 155 is, for example, 110 ° to 130 °, specifically, 120 °; the angle between the fourth wall panel 154 and the fifth wall panel 155 is, for example, 110 ° to 130 °, specifically, for example, 120 °.

In the resonator structure described above, since the first concave portion 11, the second concave portion 12, and the fourth concave portion 14 are disposed adjacent to each other two by two, and the second concave portion 12, the third concave portion 13, and the fourth concave portion 14 are disposed adjacent to each other two by two, in addition, the center of the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on the side of the first connecting line Z1, the center of the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on the side of the second connecting line Z2, and the center of the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on the side of the third connecting line Z3. When a filter including the resonant cavity structure is simulated, it can be seen from fig. 14 to 21 that the zero point is generated at the low end of the pass band (i.e., the left end of the pass band) and/or the high end of the pass band (i.e., the right end of the pass band). Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate 152 as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, the insertion loss is reduced (ohmic loss caused by flying bars is completely avoided by the product due to the reduction of the flying bars); in addition, the reliability in normal temperature and high and low temperature environments is improved (the size of the conventional flying rod is changed due to expansion caused by heat and contraction caused by cold under the high and low temperature environments, and the product performance is adversely affected); in addition, the weight of the product is reduced, and the product competition rate is improved.

Referring to fig. 3 to 10, in one embodiment, a projection of the first coupling window 1511 on one side surface of the metal resonator block 10 is located at one side of the first connection line Z1. In this way, not only can zero point generation be realized at the low end and/or the high end of the pass band, but also a good coupling effect of the first metal resonator 20 and the first dielectric resonator 30 at the first coupling window 1511 can be ensured.

Referring to fig. 3 to 10, in one embodiment, a projection of the third coupling window 1531 on one side surface of the metal resonator block 10 is located on one side of the second connection line Z2. Thus, not only can the zero point generated at the low end and/or the high end of the pass band be realized, but also the first dielectric resonator 30 and the second metal resonator 50 can be ensured to have a better coupling effect at the third coupling window 1531.

Referring to fig. 3 to 10, in one embodiment, a projection of the fifth coupling window 1551 on one side surface of the metal resonator block 10 is located at one side of the third connection line Z3. Therefore, not only can zero point generation be realized at the low end and/or the high end of the pass band, but also a good coupling effect of the second dielectric resonator 40 and the second metal resonator 50 at the fifth coupling window 1551 can be ensured.

As an alternative, the center of the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on one side of the first line Z1, and at the same time, the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 intersects the first line Z1, that is, the projections are distributed on the left and right sides of the first line Z1.

As an alternative, the center of the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on one side of the second connecting line Z2, and at the same time, the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 intersects the second connecting line Z2, that is, the projections are distributed on the left and right sides of the second connecting line Z2.

As an alternative, the center of the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on one side of the third connecting line Z3, and at the same time, the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 intersects the third connecting line Z3, that is, the projections are distributed on the left and right sides of the third connecting line Z3.

Referring to fig. 3 to 6 and 14 to 17, fig. 14 to 17 are simulation diagrams corresponding to fig. 3 to 6, respectively. In one embodiment, a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first wire Z1 away from the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third wire Z3 away from the fourth wall plate 154; alternatively, a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first line Z1 adjacent to the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third line Z3 adjacent to the fourth wall plate 154. Thus, as can be seen from the simulation of fig. 14 to 17, it is possible to generate two zeros at the high end of the pass band or the low end of the pass band.

Specifically, referring to fig. 3 and 14, fig. 14 shows response graphs of the resonator shown in fig. 3, in which a projection of the first coupling window 1511 on one side surface of the metal resonator block 10 is located on a side of the first connecting line Z1 away from the second wall plate 152, a projection of the third coupling window 1531 on one side surface of the metal resonator block 10 is located on a side of the second connecting line Z2 away from the fourth wall plate 154, and a projection of the fifth coupling window 1551 on one side surface of the metal resonator block 10 is located on a side of the third connecting line Z3 away from the fourth wall plate 154.

Specifically, referring to fig. 4 and 15, fig. 15 shows a response graph of the resonator shown in fig. 4. A projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first line Z1 close to the second wall plate 152, a projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on a side of the second line Z2 close to the fourth wall plate 154, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third line Z3 close to the fourth wall plate 154.

Specifically, referring to fig. 5 and 16, fig. 16 shows response graphs of the resonator shown in fig. 5, in which a projection of the first coupling window 1511 on one side surface of the metal resonator block 10 is located on a side of the first connection line Z1 away from the second wall plate 152, a projection of the third coupling window 1531 on one side surface of the metal resonator block 10 is located on a side of the second connection line Z2 close to the fourth wall plate 154, and a projection of the fifth coupling window 1551 on one side surface of the metal resonator block 10 is located on a side of the third connection line Z3 away from the fourth wall plate 154.

Further, referring to fig. 5 and 22, in comparison with fig. 22 and 5, the flying bar 90 is disposed at the second coupling window 1521 shown in fig. 22. Referring to fig. 22, when the flying bar 90 is disposed at the second coupling window 1521, the coupling amount between the first metal resonator 20 in the first recess 11 and the second metal resonator 50 in the fourth recess 14 can be reduced; referring to fig. 5, when the flying bar 90 is not disposed at the second coupling window 1521, the coupling amount between the first metal resonator 20 in the first recess 11 and the second metal resonator 50 in the fourth recess 14 is large.

Specifically, referring to fig. 6 and 17, fig. 17 shows response graphs of the resonator shown in fig. 6, in which a projection of the first coupling window 1511 on one side surface of the metal resonator block 10 is located on a side of the first line Z1 close to the second wall plate 152, a projection of the third coupling window 1531 on one side surface of the metal resonator block 10 is located on a side of the second line Z2 away from the fourth wall plate 154, and a projection of the fifth coupling window 1551 on one side surface of the metal resonator block 10 is located on a side of the third line Z3 close to the fourth wall plate 154.

Referring to fig. 7 to 10 and 18 to 21, fig. 18 to 21 are simulation diagrams corresponding to fig. 7 to 10, respectively. In one embodiment, the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on the side of the first line Z1 close to the second wall plate 152, and the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on the side of the third line Z3 away from the fourth wall plate 154; alternatively, the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on the side of the first line Z1 away from the second wall plate 152, and the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on the side of the third line Z3 close to the fourth wall plate 154. Thus, as can be seen from the simulation of fig. 18 to 21, it is possible to generate a zero point at the high end of the pass band and at the low end of the pass band.

Specifically, referring to fig. 7 and 18, fig. 18 shows response graphs of the resonator shown in fig. 7, in which fig. 7, a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first connection line Z1 close to the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third connection line Z3 away from the fourth wall plate 154; a projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on a side of the second line Z2 close to the fourth wall plate 154.

Specifically, referring to fig. 8 and 19, fig. 19 shows response graphs of the resonator shown in fig. 8, in which fig. 8, a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first connection line Z1 close to the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third connection line Z3 away from the fourth wall plate 154; the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on the side of the second wire Z2 remote from the fourth wall plate 154.

Specifically, referring to fig. 9 and 20, fig. 20 shows response graphs of the resonator shown in fig. 9, in which a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first connection line Z1 away from the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third connection line Z3 close to the fourth wall plate 154 in fig. 9. A projection of the third coupling window 1531 on one side surface of the metal resonator block 10 is located on a side of the second line Z2 close to the fourth wall plate 154.

Specifically, referring to fig. 10 and 21, fig. 21 shows response graphs of the resonator shown in fig. 10, in which fig. 10, a projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on a side of the first connection line Z1 away from the second wall plate 152, and a projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on a side of the third connection line Z3 close to the fourth wall plate 154. The projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on the side of the second line Z2 remote from the fourth wall plate 154.

It should be noted that, a first concave portion 11, a second concave portion 12, a third concave portion 13, and a fourth concave portion 14 are disposed on one side surface of the metal resonator block 10, that is, two metal resonators and two dielectric resonators are provided, and the two metal resonators and the two dielectric resonators can be respectively installed. However, in the present embodiment, the first concave portion 11, the second concave portion 12, the third concave portion 13, and the fourth concave portion 14 are not limited to the metal resonator element 10. In the present embodiment, the metal resonator block 10 provided with the first recess 11, the second recess 12, the third recess 13 and the fourth recess 14 is a minimum unit, that is, one, two, three or more recesses may be additionally provided on one side surface of the metal resonator block 10, and the arrangement may be performed according to actual situations. In addition, two, three, or other numbers of minimum units may be disposed on one side surface of the metal resonator block 10, which is not limited herein.

Referring to fig. 1 to 3 again, in one embodiment, a fifth concave portion 16 is disposed on one side surface of the metal resonator block 10. The third recess 13, the fourth recess 14 and the fifth recess 16 are arranged adjacent to each other two by two. The fifth recess 16 is for mounting the third metal resonator 60; wherein, the wall plate between the third concave portion 13 and the fifth concave portion 16 to separate the third concave portion 13 from the fifth concave portion 16 is a sixth wall plate 156, and the wall plate between the fourth concave portion 14 and the fifth concave portion 16 to separate the fourth concave portion 14 from the fifth concave portion 16 is a seventh wall plate 157; a sixth coupling window 1571 is provided on the seventh wall 157.

Referring to fig. 1, in one embodiment, the resonator structure further includes a signal input terminal 17 and a signal output terminal 18 disposed on the metal resonator block 10.

Further, when the resonant cavity structure is provided with the first concave 11, the second concave 12, the third concave 13 and the fourth concave 14, the signal input terminal 17 is coupled with the first metal resonator 20, and the signal output terminal 18 is coupled with the second metal resonator 50; when the resonant cavity structure is provided with the first recess 11, the second recess 12, the third recess 13, the fourth recess 14 and the fifth recess 16, the signal input end 17 is coupled to the first metal resonator 20, and the signal output end 18 is coupled to the third metal resonator 60.

Referring to fig. 1 to 3, in an embodiment, the first wall plate 151 extends to a bottom wall of the first recess 11, a distance h1 (not shown) from a top wall of the first wall plate 151 to the bottom wall of the first recess 11 is provided, a depth of the first recess 11 is S1 (not shown), and 1/2S1 ≦ h1 ≦ S1; the first boss (not shown) is arranged on the surface of the first wall plate 151, the first boss extends to the bottom wall of the first recess 11, the distance from the top wall of the first boss to the bottom wall of the first recess 11 is h2 (not shown), and h2 is less than or equal to h1. So, can adjust the coupling volume of first coupling window 1511 through the first boss that sets up on first wallboard 151 face. Similarly, a second boss may also be disposed on the surface of the second wall panel 152, and the coupling amount of the second coupling window 1521 is adjusted by the second boss. In addition, a boss may be further provided on fourth wall plate 154, which is not limited herein.

Referring to fig. 1 to fig. 3, further, a distance between two opposite port walls of the first coupling window 1511 is W1, a distance between a port wall of the first coupling window 1511 away from the first connection line Z1 and the first connection line Z1 is W2, and W1 ≦ W2.

Further, when 1/2S1 ≦ h1, the smaller h1, the larger the coupling amount of the first coupling window 1511.

Further, when W1 ≦ W2, the larger W1, the greater the amount of coupling of the first coupling window 1511.

Further, when h2 ≦ h1, the larger h2, the greater the amount of coupling of the first coupling window 1511.

It is understood that the setting parameters of the third coupling window 1531 and the third wall panel 153, and the setting parameters of the fifth coupling window 1551 and the fifth wall panel 155 are similar to those of the first coupling window 1511 and the first wall panel 151, and are not described herein again.

Referring to fig. 1 to 3, a resonator includes the resonant cavity structure of any of the above embodiments, and further includes a first metal resonator 20, a first dielectric resonator 30, a second dielectric resonator 40, and a second metal resonator 50. First metal resonator 20 is disposed in first recess 11, first dielectric resonator 30 is disposed in second recess 12, second dielectric resonator 40 is disposed in third recess 13, and second metal resonator 50 is disposed in fourth recess 14.

In the resonator described above, since the first concave portion 11, the second concave portion 12, and the fourth concave portion 14 are disposed adjacent to each other two by two, and the second concave portion 12, the third concave portion 13, and the fourth concave portion 14 are disposed adjacent to each other two by two, in addition, the center of the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on the side of the first connecting line Z1, the center of the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on the side of the second connecting line Z2, and the center of the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on the side of the third connecting line Z3. By simulating the filter including the above-described resonator structure, it can be seen from fig. 14 to 21 that the generation of the zero at the low end and/or the high end of the pass band can be realized. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate 152 as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, the insertion loss is reduced (ohmic loss caused by flying bars is completely avoided by the product due to the reduction of the flying bars); in addition, the reliability in normal temperature and high and low temperature environments is improved (the size of the conventional flying rod is changed due to expansion caused by heat and contraction caused by cold under the high and low temperature environments, and the product performance is adversely affected); in addition, the weight of the product is reduced, and the product competitiveness is improved.

Referring to fig. 1 to 3, further, the first metal resonator 20, the second metal resonator 50, the first dielectric resonator 30 and the second dielectric resonator 40 in the present embodiment are cylindrical, i.e. the projections on one side surface of the metal resonator block 10 are circular, and the center of the projection is the center of the circle. Of course, the first metal resonator 20, the second metal resonator 50, the first dielectric resonator 30, and the second dielectric resonator 40 may have other shapes, for example, a cylindrical shape having a square cross section perpendicular to the axial direction thereof, and the respective projections on one side surface of the metal resonator block 10 are square, so that the center of the projection becomes the intersection of two diagonal lines of the square.

Referring to fig. 1, 11 and 12, fig. 11 isbase:Sub>A schematic top view ofbase:Sub>A resonator according to an embodiment of the invention, and fig. 12 isbase:Sub>A sectional structural view atbase:Sub>A-base:Sub>A of fig. 11. Further, the resonator further includes a metal cover plate 70 which covers one side surface of the metal resonator block 10. The first metal resonator 20 includes a first metal resonance rod 21 disposed in the first recess 11, and a first metal tuning rod 22 positionally adjustably disposed on the metal cover plate 70; the first dielectric resonator 30 includes a first dielectric resonance rod 31 disposed in the second recess 12, and a first dielectric tuning disk 32 positionally adjustably disposed on the metal cover plate 70; the second dielectric resonator 40 includes a second dielectric resonance rod 41 disposed in the third recess 13, and a second dielectric tuning disk 42 positionally adjustably disposed on the metal cover plate 70; the second metal resonator 50 includes a second metal resonance rod 51 disposed in the fourth concave portion 14, and a second metal tuning rod 52 disposed on the metal cover plate 70 with a position adjustable.

Referring to fig. 1, 11 and 13, fig. 13 is a sectional structural view of fig. 11 at B-B. Further, the first dielectric resonator 30 further includes a first insulating support structure 33 disposed on the bottom wall of the second recess 12, and the first dielectric resonance rod 31 is mounted on the first insulating support structure 33. The first dielectric tuning disc 32 is positionally adjustable disposed on the metal cover plate 70 by the first insulating adjustment rod 34. The second dielectric resonator 40 further includes a second insulating support structure 43 provided on the bottom wall of the third recess 13, and the second dielectric resonance rod 41 is mounted on the second insulating support structure 43. The second dielectric tuning disc 42 is position-adjustably mounted on the metal cover plate 70 via the second insulating adjustment rod 44.

Further, the first metal tuning rod 22 is, for example, a metal screw, and the metal cover plate 70 is provided with a first threaded hole 71 adapted to the first metal tuning rod 22. By rotating the first metal tuning rod 22, the depth of the first metal tuning rod 22 extending into the first recess 11 can be adjusted, so as to adjust the coupling strength of the first metal resonator 20. Similarly, the second metal tuning rod 52 is, for example, a metal screw, and the metal cover plate 70 is provided with a second threaded hole 72 corresponding to the second metal tuning rod 52. By rotating the second metal tuning rod 52, the depth of the second metal tuning rod 52 extending into the fourth concave portion 14 can be adjusted, so that the coupling strength of the second metal resonator 50 can be adjusted.

Similarly, the first insulation adjusting rod 34 is, for example, an insulation screw, and the metal cover plate 70 is provided with a third threaded hole 73 corresponding to the first insulation adjusting rod 34. Specifically, the first dielectric resonator disc is fixedly attached to the first insulation adjustment lever 34 by, for example, bonding, caulking, clamping, or the like, and when the first insulation adjustment lever 34 is rotated, the depth of the first dielectric resonator disc extending into the second recess 12 can be adjusted, thereby adjusting the coupling amount. Similarly, the second insulation adjusting rod 44 is, for example, an insulation screw, and the metal cover plate 70 is provided with a fourth threaded hole 74 corresponding to the second insulation adjusting rod 44. Specifically, the second dielectric resonator disk is fixedly mounted on the second insulation adjustment rod 44 by means of, for example, bonding, riveting, clamping, or the like, and when the second insulation adjustment rod 44 is rotated, the depth of the second dielectric resonator disk extending into the third concave portion 13 can be adjusted, thereby adjusting the coupling amount.

As an optional solution, each of the first metal tuning rod 22 and the second metal tuning rod 52 may also be another rod body capable of adjusting the position on the metal cover plate 70, for example, a rod body disposed on the metal cover plate 70 through a clamping ground, and a plurality of clamping positions are sequentially disposed on the rod body at intervals, and the clamping positions can be clamped and fixedly mounted on the metal cover plate 70, and one of the clamping positions is selected to be fixed on the metal cover plate 70 according to the depth of the rod body extending into the recess. Similarly, the first insulation adjusting rod 34 and the second insulation adjusting rod 44 are not limited to the insulation screws, and may be other rods that can adjust the position of the metal cover plate 70.

Referring to fig. 1, 2, and 11 to 13, in one embodiment, a first metal adjusting bar 81 with an adjustable position is disposed on the metal cover plate 70, and the first metal adjusting bar 81 extends into the first coupling window 1511. The metal cover plate 70 is provided with a second metal adjusting rod 82 with an adjustable position, and the second metal adjusting rod 82 extends into the second coupling window 1521. The metal cover plate 70 is provided with a third metal adjusting bar 83 with an adjustable position, and the third metal adjusting bar 83 extends into the third coupling window 1531. The metal cover plate 70 is provided with a fourth metal adjusting rod 84 with an adjustable position, and the fourth metal adjusting rod 84 extends into the fourth coupling window 1541. The metal cover plate 70 is provided with a position-adjustable fifth metal adjusting rod 85, and the fifth metal adjusting rod 85 extends into the fifth coupling window 1551.

Specifically, the first metal adjustment lever 81 is, for example, a metal screw, and the metal cover plate 70 is provided with a fifth screw hole 75 corresponding to the first metal adjustment lever 81. In this way, by rotating the first metal adjusting rod 81, the depth of the first metal adjusting rod 81 extending into the first coupling window 1511 can be adjusted, so as to adjust the coupling strength at the first coupling window 1511. Similarly, the second metal adjusting rod 82 is, for example, a metal screw, and the metal cover plate 70 is provided with a sixth threaded hole 76 adapted to the second metal adjusting rod 82. Similarly, the third metal adjusting bar 83 is, for example, a metal screw, and the metal cover plate 70 is provided with a seventh threaded hole 77 corresponding to the third metal adjusting bar 83. Similarly, the fourth metal adjusting rod 84 is, for example, a metal screw, and the metal cover plate 70 is provided with an eighth threaded hole 78 corresponding to the fourth metal adjusting rod 84. Similarly, the fifth metal adjusting rod 85 is, for example, a metal screw, and the metal cover plate 70 is provided with a ninth threaded hole 79 corresponding to the fifth metal adjusting rod 85.

It should be noted that the first metal adjusting rod 81, the second metal adjusting rod 82, the third metal adjusting rod 83, the fourth metal adjusting rod 84, and the fifth metal adjusting rod 85 are not limited to metal screws, and may be other rods capable of adjusting positions on the metal cover plate 70, and are not limited herein.

Further, when the resonator is provided with the fifth recess 16, correspondingly, the third metal resonators 60 installed in the fifth recess 16 are all disposed similarly to the first metal resonator 20, and are not described herein again. The metal adjusting bar at the sixth coupling window 1571 is also arranged similarly to the first metal adjusting bar 81, and will not be described in detail herein.

Referring to fig. 1, in one embodiment, a filter includes the resonator of any of the above embodiments. The filter may be, for example, a multiplexer, a duplexer, a splitter, a combiner, or a tower amplifier, and is not limited herein.

Referring to fig. 1, in one embodiment, a communication device includes the filter of any of the above embodiments. The communication device may be, for example, a communication device such as a mobile phone, a tablet, or a computer, may also be, for example, a switch, and may also be other electronic devices having a communication function, which is not limited herein.

In the filter and the communication device, since the first recess 11, the second recess 12, and the fourth recess 14 are disposed adjacent to each other two by two, and the second recess 12, the third recess 13, and the fourth recess 14 are disposed adjacent to each other two by two, in addition, the center of the projection of the first coupling window 1511 on one of the side surfaces of the metal resonator block 10 is located on the side of the first connection line Z1, the center of the projection of the third coupling window 1531 on one of the side surfaces of the metal resonator block 10 is located on the side of the second connection line Z2, and the center of the projection of the fifth coupling window 1551 on one of the side surfaces of the metal resonator block 10 is located on the side of the third connection line Z3. By simulating the filter including the above-described resonator structure, it can be seen from fig. 14 to 21 that the generation of the zero at the low end and/or the high end of the pass band can be realized. Therefore, on one hand, the flying rod does not need to be arranged on the second wall plate 152 as in the traditional technology, so that the material cost can be saved, the assembly process can be simplified, and the production efficiency can be improved; on the other hand, the insertion loss is reduced (ohmic loss caused by flying bars is completely avoided by the product due to the reduction of the flying bars); in addition, the reliability of the conventional flying rod in normal temperature and high and low temperature environments is improved (the conventional flying rod expands with heat and contracts with cold in the high and low temperature environments, so that the size of the flying rod is changed, and the product performance is adversely affected); in addition, the weight of the product is reduced, and the product competition rate is improved.

It should be noted that the "first metal resonant rod 21 and the second metal resonant rod 51" may be a part of the "metal resonant block 10", that is, the "first metal resonant rod 21 and the second metal resonant rod 51" and the "other part of the metal resonant block 10" are integrally formed; the "first metal resonance rod 21 and the second metal resonance rod 51" may be manufactured separately and then combined with the "other parts of the metal resonance block 10" into a single body. As shown in fig. 12, in one embodiment, the "first metal resonant rod 21 and the" second metal resonant rod 51 "are a part of the" metal resonant block 10 "that is integrally manufactured.

Specifically, the metal cover plate 70 is detachably attached to the metal resonator block 10 by, for example, a mounting member.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A resonant cavity structure, comprising:

the metal resonator block is provided with a first concave part, a second concave part, a third concave part and a fourth concave part on one side surface; the first concave part, the second concave part and the fourth concave part are arranged adjacently in pairs, and the second concave part, the third concave part and the fourth concave part are arranged adjacently in pairs;

the first concave part is used for installing a first metal resonator, the second concave part is used for installing a first dielectric resonator, the third concave part is used for installing a second dielectric resonator, and the fourth concave part is used for installing a second metal resonator; wherein the wall panel between the first recess and the second recess that separates the first recess from the second recess is a first wall panel, the wall panel between the first recess and the fourth recess that separates the first recess from the fourth recess is a second wall panel, the wall panel between the second recess and the fourth recess that separates the second recess from the fourth recess is a third wall panel, the wall panel between the second recess and the third recess that separates the second recess from the third recess is a fourth wall panel, and the wall panel between the third recess and the fourth recess that separates the third recess from the fourth recess is a fifth wall panel; wherein the first wall panel does not extend into the first recess, the third wall panel does not extend into the fourth recess, and the fifth wall panel does not extend into the fourth recess;

a first coupling window is arranged on the first wall plate, a second coupling window is arranged on the second wall plate, a third coupling window is arranged on the third wall plate, a fourth coupling window is arranged on the fourth wall plate, and a fifth coupling window is arranged on the fifth wall plate; defining a first connecting line Z1 as a connecting line of the center of the projection of the first metal resonator on one side surface of the metal resonant block and the center of the projection of the first dielectric resonator on one side surface of the metal resonant block; defining a second connecting line Z2 as a connecting line between the center of the projection of the first dielectric resonator on one of the side surfaces of the metal resonator block and the center of the projection of the second metal resonator on one of the side surfaces of the metal resonator block; defining a third line Z3 as a line connecting the center of projection of the second dielectric resonator on one of the side surfaces of the metal resonator block and the center of projection of the second metal resonator on one of the side surfaces of the metal resonator block;

a projection of the first coupling window on one of the side surfaces of the metal resonator block is located on one side of the first connecting line Z1, a projection of the third coupling window on one of the side surfaces of the metal resonator block is located on one side of the second connecting line Z2, and a projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on one side of the third connecting line Z3; the distance between the two opposite port walls of the first coupling window is W1, the distance between the port wall of the first coupling window far away from the first connecting line Z1 and the first connecting line Z1 is W2, W1 is less than or equal to W2, and the coupling amount of the first coupling window is increased by increasing W1.

2. The resonator structure according to claim 1, characterized in that the projection of said first coupling window on one of the lateral surfaces of said metal resonator block is located on the side of said first line Z1 remote from said second wall plate, and the projection of said fifth coupling window on one of the lateral surfaces of said metal resonator block is located on the side of said third line Z3 remote from said fourth wall plate; alternatively, a projection of the first coupling window on one of the side surfaces of the metal resonator block is located on a side of the first line Z1 adjacent to the second wall plate, and a projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on a side of the third line Z3 adjacent to the fourth wall plate.

3. A resonator structure according to claim 2, wherein a projection of the first coupling window onto one of the side surfaces of the metallic resonator block is located on a side of the first line Z1 remote from the second wall plate, a projection of the third coupling window onto one of the side surfaces of the metallic resonator block is located on a side of the second line Z2 remote from the fourth wall plate, and a projection of the fifth coupling window onto one of the side surfaces of the metallic resonator block is located on a side of the third line Z3 remote from the fourth wall plate;

or, the projection of the first coupling window on one of the side surfaces of the metal resonator block is located on the side of the first line Z1 close to the second wall plate, the projection of the third coupling window on one of the side surfaces of the metal resonator block is located on the side of the second line Z2 close to the fourth wall plate, and the projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on the side of the third line Z3 close to the fourth wall plate;

4. A resonator structure according to claim 1, characterized in that the projection of the first coupling window on one of the lateral surfaces of the metallic resonator block is located on the side of the first line Z1 close to the second wall plate, and the projection of the fifth coupling window on one of the lateral surfaces of the metallic resonator block is located on the side of the third line Z3 remote from the fourth wall plate; alternatively, the projection of the first coupling window on one of the side surfaces of the metal resonator block is located on the side of the first line Z1 remote from the second wall plate, and the projection of the fifth coupling window on one of the side surfaces of the metal resonator block is located on the side of the third line Z3 close to the fourth wall plate.

5. The resonator structure according to any of claims 1 to 4, characterized in that the metal resonator block is provided with a fifth recess on one of its side surfaces; the third concave part, the fourth concave part and the fifth concave part are arranged adjacent to each other in pairs; the fifth concave part is used for installing a third metal resonator; wherein the wall panel between the third recess and the fifth recess separating the third recess from the fifth recess is a sixth wall panel and the wall panel between the fourth recess and the fifth recess separating the fourth recess from the fifth recess is a seventh wall panel; and a sixth coupling window is arranged on the seventh wall plate.

6. A resonator comprising the resonator structure according to any one of claims 1 to 5, and further comprising a first metal resonator, a first dielectric resonator, a second dielectric resonator, and a second metal resonator; the first metal resonator is disposed in the first recess, the first dielectric resonator is disposed in the second recess, the second dielectric resonator is disposed in the third recess, and the second metal resonator is disposed in the fourth recess.

7. The resonator according to claim 6, further comprising a metal cover plate covering one side surface of the metal resonator block; the first metal resonator comprises a first metal resonance rod arranged in the first concave part and a first metal tuning rod arranged on the metal cover plate in a position-adjustable manner; the first dielectric resonator comprises a first dielectric resonance rod arranged in the second concave part and a first dielectric tuning disc arranged on the metal cover plate in a position-adjustable mode; the second dielectric resonator comprises a second dielectric resonance rod arranged in the third concave part and a second dielectric tuning disc arranged on the metal cover plate in a position-adjustable manner; the second metal resonator comprises a second metal resonance rod arranged in the fourth concave part and a second metal tuning rod arranged on the metal cover plate in a position-adjustable mode.

8. The resonator according to claim 7, wherein said first dielectric resonator further comprises a first insulating support structure provided on a bottom wall of said second recess, said first dielectric resonance rod being mounted on said first insulating support structure; the first dielectric tuning disc is arranged on the metal cover plate in a position-adjustable manner through a first insulating adjusting rod; the second dielectric resonator further comprises a second insulating support structure arranged on the bottom wall of the third concave part, and the second dielectric resonance rod is arranged on the second insulating support structure; the second dielectric tuning disc is arranged on the metal cover plate in a position-adjustable mode through a second insulating adjusting rod.

9. The resonator according to claim 7, wherein the metal cover plate is provided with a first metal adjusting rod with adjustable position, and the first metal adjusting rod extends into the first coupling window; a second metal adjusting rod with adjustable position is arranged on the metal cover plate and extends into the second coupling window; a third metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the third coupling window; a fourth metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the fourth coupling window; and a fifth metal adjusting rod with an adjustable position is arranged on the metal cover plate and extends into the fifth coupling window.

10. A filter, characterized in that it comprises a resonator according to any one of claims 6 to 9.

11. A communication device, characterized in that the communication device comprises a filter according to claim 10.