CN219643097U

CN219643097U - TM mode dielectric resonator and TM mode dielectric filter

Info

Publication number: CN219643097U
Application number: CN202321208889.3U
Authority: CN
Inventors: 黄永忠; 熊家平; 田守君; 胡轶; 张中玉; 胡华乔
Original assignee: Ningbo Huaci Communication Technology Co ltd
Current assignee: Ningbo Huaci Communication Technology Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-09-05
Anticipated expiration: 2033-05-18

Abstract

The utility model is suitable for the technical field of resonators and filters, and particularly discloses a TM mode dielectric resonator and a TM mode dielectric filter. The TM mode dielectric resonator of the present utility model includes: the metal resonant cavity, the cover plate, the metal flying rod piece, the dielectric resonant column and the tuning screw. The two ends of the metal flying rod piece are respectively and independently fixed in the metal resonant cavity through a metal screw, the metal flying rod piece is not connected with the cover plate, the opening and closing operation of the cover plate is not affected, and the metal flying rod piece is not contacted with the cover plate, so that the situation of large insertion loss or poor intermodulation is avoided.

Description

TM mode dielectric resonator and TM mode dielectric filter

Technical Field

The utility model belongs to the technical field of resonators and filters, and particularly relates to a TM mode dielectric resonator and a TM mode dielectric filter.

Background

The filter is widely used in the communication fields of radio frequency, microwave and the like. The most widely used filters in the radio frequency, microwave frequency range are currently coaxial cavity filters, which form the desired operating characteristics by adjusting the resonant frequencies of the multiple cavities and the coupling strength between the cavities. The tuning screw is generally adjusted to adjust the resonant frequency of the cavities, and the coupling between certain cavities can be performed by controlling the coupling flybar.

The traditional dielectric resonator mainly comprises a dielectric resonance column, a metal cavity and a cover plate, wherein a flying rod piece is arranged on the cover plate, one end of the flying rod piece is fixed by an independent screw, and the other end of the flying rod piece and the cover plate share a fastening screw, so that the dielectric resonator is not easy to operate when the cover plate is closed, and the contact surface between the metal flying rod piece and the cover plate is large, so that good contact between the metal flying rod piece and the cover plate is influenced, and the situation of large insertion loss or poor intermodulation is caused.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a TM mode dielectric resonator and a TM mode dielectric filter. The TM mode dielectric resonator is provided with the metal flying rod piece, two ends of the metal flying rod piece are respectively and independently fixed in the metal resonant cavity through one metal screw, the metal flying rod piece is not connected with the cover plate, the opening and closing operation of the cover plate is not affected, and the metal flying rod piece is not contacted with the cover plate, so that the conditions of large insertion loss or poor intermodulation are avoided.

In a first aspect, the present utility model provides a TM mode dielectric resonator, including:

the metal resonant cavity is provided with an opening at the upper part, and a first metal step, a second metal step and a plurality of third metal steps are arranged at the bottom of the metal resonant cavity;

the cover plate is positioned on the opening of the metal resonant cavity;

one end of the metal flying rod piece is connected to the first metal step through a first metal screw, and the other end of the metal flying rod piece is connected to the second metal step through a second metal screw;

a plurality of dielectric resonator pillars, one dielectric resonator pillar being located on the top surface of one third metal step;

the tuning screw rod penetrates through the cover plate and is fixedly connected with the cover plate.

Further, there is a height difference between the first metal step and the second metal step.

Further, a height difference between the first metal step and the second metal step is not smaller than a thickness of the metal flying lever piece.

Further, the metal flying pole piece is of an irregular U-shaped structure.

Further, a through hole for the tuning screw to pass through is formed in the cover plate, an internal thread is formed in the through hole, and an external thread matched with the internal thread is formed in the outer wall of the tuning screw.

Further, the TM mode dielectric resonator further includes: a third metal screw;

and the cover plate is fixedly connected with the metal resonant cavity by the third metal screw.

Further, the TM mode dielectric resonator further includes: a connector;

the connectors are positioned on two sides of the TM mode dielectric resonator.

In a second aspect, the present utility model provides a TM mode dielectric filter, where the TM mode dielectric filter includes the TM mode dielectric resonator of the present utility model.

Compared with the prior art, the utility model has the following technical effects:

the TM mode dielectric resonator is provided with the metal flying rod piece, one end of the metal flying rod piece is connected to the first metal step through the first metal screw, the other end of the metal flying rod piece is connected to the second metal step through the second metal screw, the metal flying rod piece is not connected with the cover plate, the opening and closing operation of the cover plate is not affected, and the metal flying rod piece is not contacted with the cover plate, so that the situation of large insertion loss or poor intermodulation is avoided.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model.

FIG. 1 is a block diagram of a TM mode dielectric resonator of the present utility model;

FIG. 2 is a top view of a TM mode dielectric resonator of the present utility model;

FIG. 3 is a top view of the internal structure of the TM mode dielectric resonator of the present utility model;

fig. 4 is a perspective view of the metal fly rod sheet according to the present utility model.

Reference numerals: 100. a TM mode dielectric resonator; 101. a metal resonant cavity; 102. a cover plate; 103. a first metal step; 104. a second metal step; 105. a third metal step; 106. a metal flying lever sheet; 107. a dielectric resonating column; 108. a tuning screw; 109. a connector; 110. a first metal screw; 111. a second metal screw; 112. and a third metal screw.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "horizontal", "top", "bottom", "two sides", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", "third" may include one or more of the described features, either explicitly or implicitly. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Embodiments of the application will be explained below in connection with fig. 1-4. Fig. 1 is a structural view of a TM mode dielectric resonator of the present utility model, fig. 2 is a plan view of the TM mode dielectric resonator of the present utility model, fig. 3 is a plan view of an internal structure of the TM mode dielectric resonator of the present utility model, fig. 4 is a perspective structural view of a metal flying lever sheet of the present utility model, and fig. 1 is a sectional view taken along A-A in fig. 2.

Example 1

Referring to fig. 1 to 4, a TM mode dielectric resonator (100) of the present embodiment includes:

the metal resonant cavity (101), the upper part of the metal resonant cavity (101) is provided with an opening, and the bottom of the metal resonant cavity (101) is provided with a first metal step (103), a second metal step (104) and a plurality of third metal steps (105);

the cover plate (102), the cover plate (102) is positioned on the opening of the metal resonant cavity (101);

the metal flying rod piece (106), one end of the metal flying rod piece (106) is connected to the first metal step (103) through a first metal screw (110), and the other end of the metal flying rod piece (106) is connected to the second metal step (104) through a second metal screw (111);

a plurality of dielectric resonator pillars (107), one dielectric resonator pillar (107) being located on a top surface of one third metal step (105);

and the tuning screw rod (108) penetrates through the cover plate (102) and is fixedly connected with the cover plate (102).

In the utility model, a plurality of dielectric resonance posts (107) are arranged, one dielectric resonance post (107) is arranged on the top surface of one third metal step (105), and the coupling effect between the dielectric resonance posts (107) is enhanced through the metal flying rod sheet (106).

The TM mode dielectric resonator (100) is provided with the metal flying rod piece (106), one end of the metal flying rod piece (106) is connected to the first metal step (103) through the first metal screw (110), the other end of the metal flying rod piece (106) is connected to the second metal step (104) through the second metal screw (111), the metal flying rod piece is not connected with the cover plate (102), the opening and closing operation of the cover plate (102) is not affected, and the metal flying rod piece (106) is not contacted with the cover plate (102), so that the situation of large insertion loss or poor intermodulation is avoided.

Example 2

Referring to fig. 1, in the TM mode dielectric resonator (100) of the present embodiment, there is a height difference between the first metal step (103) and the second metal step (104).

In the utility model, the heights of the first metal step (103) and the second metal step (104) are different, so that positive and negative coupling information can be realized.

In some embodiments, the height difference between the first metal step (103) and the second metal step (104) is not less than the thickness of the metal flying lever sheet (106), so that the metal flying lever sheet (106) is more convenient and firmer to install. Wherein the thickness of the metal fly rod sheet (106) can be 0.8-1.2 mm.

Example 3

Referring to fig. 1 and 4, in the TM mode dielectric resonator (100) of the present embodiment, the metal flying lever piece (106) has an irregular U-shaped structure.

In the utility model, the metal flying lever sheet (106) with an irregular U-shaped structure is adopted relative to the metal flying lever sheet with a regular shape, so that the coupling effect can be enhanced; in addition, the metal flying rod piece (106) is of an irregular U-shaped structure, one end of the metal flying rod piece (106) is installed on the first metal step (103), and the other end of the metal flying rod piece is installed on the second metal step (104).

Example 4

In the TM mode dielectric resonator (100) of this embodiment, a through hole through which the tuning screw (108) passes is provided on the cover plate (102), the through hole is provided with an internal thread, and an external thread matched with the internal thread is provided on an outer wall of the tuning screw (108).

The tuning screw (108) is connected with the through hole on the cover plate (102) through matched internal and external threads, so that the connection is tight and firm.

Example 5

Referring to fig. 1-2, the TM mode dielectric resonator (100) of the present embodiment further includes a third metal screw (112);

the cover plate (102) is fixedly connected with the metal resonant cavity (101) through a third metal screw (112).

The cover plate (102) is fixedly connected with the metal resonant cavity (101) through the third metal screw (112), the upper end of the dielectric resonant column (107) can be tightly connected with the cover plate (102), the lower end of the dielectric resonant column (107) is tightly connected with the corresponding third metal step (105), and the position of the dielectric resonant column (107) is prevented from moving.

Example 6

Referring to fig. 1 to 3, the TM mode dielectric resonator (100) of the present embodiment further includes a connector (109);

the connectors (109) are located on both sides of the TM mode dielectric resonator (100).

In the utility model, connectors (109) arranged on two sides of a TM mode dielectric resonator (100) are used for connecting with an external signal.

Example 7

The embodiment provides a TM mode dielectric filter, which includes the TM mode dielectric resonator (100) described above.

The TM mode dielectric filter comprises a TM mode dielectric resonator (100), wherein the TM mode dielectric resonator is the TM mode dielectric resonator of any one of the embodiments. For the specific structure of the TM mode dielectric resonator, please refer to the drawings and the related text descriptions of the above embodiments, and the detailed description is omitted here.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A TM mode dielectric resonator, comprising:

the cover plate is positioned on the opening of the metal resonant cavity;

2. The TM mode dielectric resonator of claim 1, wherein a height difference is provided between the first metal step and the second metal step.

3. The TM mode dielectric resonator of claim 2, wherein a height difference between the first metal step and the second metal step is not less than a thickness of the metal flying lever piece.

4. The TM mode dielectric resonator of claim 2, wherein the metal flying bar piece has an irregular U-shaped structure.

5. The TM mode dielectric resonator of claim 1, wherein the cover plate is provided with a through hole through which the tuning screw passes, the through hole is provided with an internal thread, and an external thread matched with the internal thread is provided on an outer wall of the tuning screw.

6. The TM mode dielectric resonator of claim 1, wherein the TM mode dielectric resonator further comprises: a third metal screw;

7. The TM mode dielectric resonator of claim 1, wherein the TM mode dielectric resonator further comprises: a connector;

the connectors are positioned on two sides of the TM mode dielectric resonator.

8. A TM mode dielectric filter, comprising a TM mode dielectric resonator as claimed in any one of claims 1 to 7.