阅读说明：本技术 一种滤波器耦合量增强结构 (Filter coupling quantity reinforcing structure ) 是由 华奎 熊家平 张中玉 田守君 胡轶 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种滤波器耦合量增强结构,涉及滤波器技术领域,其技术方案要点包括两个相互连接的壳体以及位于两个所述壳体之间的间隔板,两个所述壳体内分别插接有第一谐振器和第二谐振器,所述第一谐振器和所述第二谐振器之间设置有贯穿所述间隔板的飞杆耦合棒,所述飞杆耦合棒的一端设置有飞杆盘,所述飞杆盘的直径大于所述飞杆耦合棒的直径；所述飞杆盘套接有半封闭套管,所述半封闭套管与所述飞杆耦合棒远离所述半封闭套管的一端分别与相应的所述第一谐振器和所述第二谐振器连接固定。本发明具有通过改变飞杆盘的厚度即可实现电容大小的调节,并实现对耦合量的有效调节；在电容随着厚度增大而增大时,将实现增大耦合量的效果。(The invention discloses a filter coupling amount enhancing structure, which relates to the technical field of filters, and adopts the technical scheme that the structure comprises two mutually connected shells and a spacing plate positioned between the two shells, wherein a first resonator and a second resonator are respectively inserted into the two shells, a flying rod coupling rod penetrating through the spacing plate is arranged between the first resonator and the second resonator, one end of the flying rod coupling rod is provided with a flying rod disc, and the diameter of the flying rod disc is larger than that of the flying rod coupling rod; the flying rod disc is sleeved with a semi-closed sleeve, and one ends of the semi-closed sleeve and the flying rod coupling rod, which are far away from the semi-closed sleeve, are respectively connected and fixed with the corresponding first resonator and the second resonator. The invention can realize the adjustment of the capacitance by changing the thickness of the fly rod disc and realize the effective adjustment of the coupling quantity; as the capacitance increases with increasing thickness, an effect of increasing the amount of coupling will be achieved.)

1. A filter coupling amount enhancing structure is characterized in that: the flying rod coupling device comprises two mutually connected shells (1) and a partition plate (2) positioned between the two shells (1), wherein a first resonator (3) and a second resonator (4) are respectively inserted into the two shells (1), a flying rod coupling rod (7) penetrating through the partition plate (2) is arranged between the first resonator (3) and the second resonator (4), a flying rod disc (71) is arranged at one end of the flying rod coupling rod (7), and the diameter of the flying rod disc (71) is larger than that of the flying rod coupling rod (7); the flying rod disc (71) is sleeved with a semi-closed sleeve, and one ends of the semi-closed sleeve and the flying rod coupling rod (7) far away from the semi-closed sleeve are respectively connected and fixed with the corresponding first resonator (3) and the second resonator (4).

2. A filter coupling amount enhancing structure according to claim 1, wherein: the semi-closed sleeve comprises a first semi-closed sleeve (5) and a second semi-closed sleeve (6), the flying bar disc (71) is inserted into the second semi-closed sleeve (6), the second semi-closed sleeve (6) is inserted into the first semi-closed sleeve (5), and the first semi-closed sleeve (5) is fixedly connected with the corresponding first resonator (3) or the second resonator (4).

3. A filter coupling amount enhancing structure according to claim 2, wherein: the first semi-closed sleeve (5) is fixedly welded with the corresponding first resonator (3) or the corresponding second resonator (4), and one end, far away from the first semi-closed sleeve (5), of the flying rod coupling rod (7) is fixedly welded with the corresponding second resonator (4) or the corresponding first resonator (3).

4. A filter coupling amount enhancing structure according to claim 2, wherein: the first semi-closed sleeve (5) is made of metal.

5. A filter coupling amount enhancing structure according to claim 4, wherein: the metal is copper, aluminum or alloy, and a silver layer is electroplated on the outer side of the first semi-closed sleeve (5).

6. A filter coupling amount enhancing structure according to claim 2, wherein: the second semi-closed sleeve (6) is made of high polymer materials.

7. A filter coupling amount enhancing structure as set forth in claim 6, wherein: the high polymer material is polytetrafluoroethylene.

8. A filter coupling amount enhancing structure according to claim 1, wherein: the flying rod coupling rod is characterized in that a flying rod clamping seat (8) is fixedly connected with the spacing plate (2) in an inserted mode, and a clamping seat inserting hole (81) matched with the flying rod coupling rod (7) is formed in the flying rod clamping seat (8).

9. A filter coupling amount enhancing structure according to claim 1, wherein: the shell (1) is cylindrical.

10. A filter coupling amount enhancing structure according to claim 1, wherein: the upper ends of the first resonator (3) and the second resonator (4) are respectively provided with an outer expanding ring body (31), and the semi-closed sleeve is fixedly abutted to the corresponding outer expanding ring body (31).

Technical Field

The invention relates to the technical field of filters, in particular to a filter coupling quantity enhancing structure.

Background

In a cavity filter, a flying rod is usually used to realize signal coupling between two adjacent single-cavity resonant rods, the flying rod is mounted on a flying rod seat, and the flying rod seat is fixed on a spacer rib between the two adjacent single cavities.

Chinese patent No. CN208272083U discloses a ceramic dielectric waveguide filter based on capacitive cross-coupling flying rods, which includes a coupling diaphragm and an adjustable flying rod, a coupling diaphragm is disposed between two adjacent cavities for separating the two cavities and fine-tuning the coupling amount, an adjustable flying rod is disposed between two adjacent resonant columns for adjusting the capacitive coupling amount between the adjacent resonators, the adjustable flying rod is composed of a dielectric unit and a silver layer unit, the dielectric unit and the silver layer unit are connected up and down and adjustable in size, the silver layer unit is parallel to a plane formed by the arrangement direction of the resonant columns, and an electric screwdriver for adjusting the area of the silver layer unit is connected outside the silver layer unit.

However, although the overall structure of the ceramic dielectric waveguide filter based on the capacitive cross-coupled flying rod is simple, it is difficult to effectively apply the ceramic dielectric waveguide filter to a filter having a small external shape and a low frequency, and improvement is needed.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a filter coupling amount enhancing structure, which solves the problem that the required flying bar coupling amount is stronger due to small shape and low frequency.

In order to achieve the purpose, the invention provides the following technical scheme:

a filter coupling quantity enhancing structure comprises two mutually connected shells and a spacing plate positioned between the two shells, wherein a first resonator and a second resonator are respectively inserted into the two shells, a flying rod coupling rod penetrating through the spacing plate is arranged between the first resonator and the second resonator, one end of the flying rod coupling rod is provided with a flying rod disc, and the diameter of the flying rod disc is larger than that of the flying rod coupling rod; the flying rod disc is sleeved with a semi-closed sleeve, and one ends of the semi-closed sleeve and the flying rod coupling rod, which are far away from the semi-closed sleeve, are respectively connected and fixed with the corresponding first resonator and the second resonator.

The invention is further configured to: the semi-closed sleeve comprises a first semi-closed sleeve and a second semi-closed sleeve, the flying rod disc is inserted in the second semi-closed sleeve, the second semi-closed sleeve is inserted in the first semi-closed sleeve, and the first semi-closed sleeve is fixedly connected with the corresponding first resonator or the second resonator.

The invention is further configured to: the first semi-closed sleeve is fixedly welded with the corresponding first resonator or the second resonator, and one end, far away from the first semi-closed sleeve, of the flying rod coupling rod is fixedly welded with the corresponding second resonator or the first resonator.

The invention is further configured to: the first semi-enclosed sleeve is made of metal.

The invention is further configured to: the metal is copper, aluminum or alloy, and a silver layer is electroplated on the outer side of the first semi-closed sleeve.

The invention is further configured to: the second semi-closed sleeve is made of high polymer materials.

The invention is further configured to: the high polymer material is polytetrafluoroethylene.

The invention is further configured to: the spacer plate is fixedly provided with a flying rod clamping seat in an inserting mode, and the flying rod clamping seat is provided with a clamping seat inserting hole matched with the flying rod coupling rod.

The invention is further configured to: the housing is cylindrical.

The invention is further configured to: the upper ends of the first resonator and the second resonator are respectively provided with an outer expanding ring body, and the semi-closed sleeve is fixedly connected with the corresponding outer expanding ring body in an abutting mode.

In conclusion, the invention has the following beneficial effects: the position of the flying rod coupling rod is fixed through the flying rod clamping seat, the mounting stability of the flying rod coupling rod is improved, when one end of the flying rod coupling rod is fixedly welded with the corresponding first resonator or the corresponding second resonator, the other end of the flying rod coupling rod is inserted into the second semi-closed sleeve, the first semi-closed sleeve, the second semi-closed sleeve and the flying rod coupling rod are insulated and not conducted, so that a capacitor is formed, the size of the capacitor can be adjusted by changing the thickness of the flying rod disc, and the coupling amount can be effectively adjusted; among them, when the capacitance increases with an increase in thickness, an effect of increasing the coupling amount is achieved.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

fig. 2 is a schematic sectional structure diagram of the present embodiment.

Description of reference numerals: 1. a housing; 2. a partition plate; 3. a first resonator; 31. an outer expanding ring body; 4. a second resonator; 5. a first semi-enclosed sleeve; 6. a second semi-enclosed sleeve; 7. a flying bar coupling rod; 71. a fly rod disk; 8. a flying bar clamping seat; 81. and (4) inserting holes of the card seat.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example one

As shown in fig. 1, a filter coupling amount enhancing structure includes two cylindrical housings 1 connected to each other and a partition plate 2 located between the two housings 1.

As shown in fig. 1 and 2, a first resonator 3 and a second resonator 4 are respectively inserted into the two housings 1. A flying rod coupling rod 7 penetrating the spacer 2 is arranged between the first resonator 3 and the second resonator 4. One end of the flying bar coupling rod 7 is provided with a flying bar disc 71, and the diameter of the flying bar disc 71 is larger than that of the flying bar coupling rod 7. Meanwhile, a semi-closed sleeve is fitted over the flying bar disk 71. And one ends of the semi-closed sleeve and the flying rod coupling rod 7, which are far away from the semi-closed sleeve, are respectively connected and fixed with the corresponding first resonator 3 and the second resonator 4. In the present embodiment, the flying bar disc 71 is used for connecting with the first resonator 3, and the end of the flying bar coupling rod 7 away from the flying bar disc 71 is used for welding and fixing with the second resonator 4.

It should be mentioned that the semi-enclosed sleeve comprises a first semi-enclosed sleeve 5 and a second semi-enclosed sleeve 6. The fly rod disc 71 is inserted in the second semi-enclosed sleeve 6, and the second semi-enclosed sleeve 6 is inserted in the first semi-enclosed sleeve 5. The first semi-closed sleeve 5 is welded to the corresponding first resonator 3.

As shown in fig. 2, a flying bar clamping seat 8 is fixedly inserted into the partition plate 2. The flying rod clamping seat 8 is provided with a clamping seat insertion hole 81 matched with the flying rod coupling rod 7, so that the flying rod coupling rod 7 is connected with the first resonator 3 and the second resonator 4 after penetrating through the clamping seat insertion hole 81.

In order to further improve the structural stability of the filter coupling amount enhancing structure, an outer expanding body 31 is arranged at the upper ends of the first resonator 3 and the second resonator 4. The semi-closed sleeve is fixed in abutment with the corresponding outer flared body 31. Wherein the first semi-enclosed casing 5 is made of metal, and in this embodiment, the first semi-enclosed casing 5 is supported by copper, and the outer side of the first semi-enclosed casing 5 is electroplated with a silver layer. The second semi-closed sleeve 6 is made of polymer material, and in this embodiment, the polymer material is teflon.

Example two

The difference between the second embodiment and the first embodiment is that the first semi-enclosed casing 5 in the second embodiment is made of aluminum and is plated with silver on the outside.

EXAMPLE III

The difference between the third embodiment and the first embodiment is that the first semi-enclosed sleeve 5 in the third embodiment is made of an alloy and is plated with a silver layer on the outside.

Example four

The difference between the fourth embodiment and the first embodiment is that the second semi-enclosed sleeve 6 in the fourth embodiment is made of fluorinated ethylene propylene resin.

EXAMPLE five

The difference between the fifth embodiment and the first embodiment is that the first semi-closed sleeve 5 in the fifth embodiment is welded and fixed with the second resonator 4, and the end of the flying bar coupling rod 7 away from the flying bar disc 71 is welded and fixed with the first resonator 3.

In conclusion, the position of the flying rod coupling rod 7 is fixed through the flying rod clamping seat 8, the installation stability of the flying rod coupling rod 7 is improved, when one end of the flying rod coupling rod 7 is welded and fixed with the corresponding first resonator 3 or the second resonator 4, the other end of the flying rod coupling rod 7 is inserted into the second semi-closed sleeve 6, the first semi-closed sleeve 5, the second semi-closed sleeve 6 and the flying rod coupling rod 7 are insulated and not conducted, so that a capacitor is formed, the size of the capacitor can be adjusted by changing the thickness of the flying rod disc 71, and the coupling amount can be effectively adjusted; among them, when the capacitance increases with an increase in thickness, an effect of increasing the coupling amount is achieved.

References in this application to "first," "second," "third," "fourth," etc., if any, are intended to distinguish between similar elements and not necessarily to describe a particular order or sequence. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, or apparatus.

It should be noted that the descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.