阅读说明：本技术 一种共谐振器滤波器 (Common resonator filter ) 是由 成钢 方锋明 彭蛟 吴运松 方敏杰 陈志军 于 2019-10-18 设计创作，主要内容包括：一种共谐振器滤波器,包括基体、盖板、谐振片和若干个调螺,其中基体上开设有若干个腔体,相邻的两个腔体之间通过隔板分离,每个腔体中伸入至少一个调螺,所述谐振片包括一体连接的连接部和若干个延伸部,延伸部一一对应地伸入所述腔体中。本发明提供一种共谐振器滤波器,生产成本低、效率高,并且安装工艺简单。(A resonator filter comprises a base body, a cover plate, a resonance piece and a plurality of adjusting screws, wherein the base body is provided with a plurality of cavities, two adjacent cavities are separated through a partition plate, at least one adjusting screw extends into each cavity, the resonance piece comprises a connecting portion and a plurality of extending portions, the connecting portion and the extending portions are connected integrally, and the extending portions extend into the cavities in a one-to-one correspondence mode. The invention provides a common resonator filter which is low in production cost, high in efficiency and simple in installation process.)

1. The utility model provides a resonator filter altogether, includes that base member (9), apron (3), resonance piece and a plurality of transfer spiral shell (1), wherein seted up a plurality of cavity (11) on base member (9), separate through baffle (10) between two adjacent cavity (11), stretch into at least one in every cavity (11) and transfer spiral shell (1), its characterized in that: the resonator plate comprises a connecting part (8) and a plurality of extending parts (6) which are integrally connected, and the extending parts (6) correspondingly extend into the cavity (11) one by one.

2. A co-resonator filter according to claim 1, wherein: all the partition plates (10) are fixedly connected with a support plate (24) together, at least one resonant chip positioning pin (7) is fixedly connected to the support plate (24), and at least one resonant chip positioning hole (5) corresponding to the resonant chip positioning pin (7) is formed in the bottom of the connecting portion (8).

3. A co-resonator filter according to claim 2, wherein: tin hiding grooves (19) are formed in the supporting plate (24) and the connecting portion (8).

4. A co-resonator filter according to claim 1, wherein: the base body (9) is fixedly connected with at least one cover plate positioning pin (23), and the cover plate (3) is provided with at least one cover plate positioning hole (2) corresponding to the cover plate positioning pin (23).

5. A co-resonator filter according to claim 1, wherein: the extension part (6) is provided with a connecting groove (18) extending up and down, a connecting wire (12) or a connecting piece (17) is arranged in the connecting groove (18), the connecting wire (12) penetrates out of the base body (9), and the connecting piece (17) is used for achieving electric connection of the two extension parts (6).

6. A co-resonator filter according to claim 5, wherein: the connecting member (17) includes a horizontal portion and two vertical portions integrally connected to both ends of the horizontal portion, respectively, and the vertical portions are inserted into the connecting grooves (18).

7. A co-resonator filter according to claim 1, wherein: the two ends of the connecting part (8) are respectively provided with a positioning groove (20) which extends up and down, and the base body (9) is fixedly connected with a positioning strip (22) corresponding to the positioning groove (20).

8. A co-resonator filter according to claim 1, wherein: the inner side of the cover plate (3) is fixedly connected with a flying rod assembly used for coupling the two cavities (11), the flying rod assembly comprises a flying rod (15) and a fixing unit used for fixing the flying rod (15) on the cover plate (3), and two ends of the flying rod (15) are respectively positioned above the two cavities (11).

9. A co-resonator filter according to claim 8, wherein: the fixing unit comprises a connecting seat (14) and a pressing piece (16), wherein the pressing piece (16) sequentially penetrates through the flying bar (15), the connecting seat (14) and the cover plate (3).

Technical Field

The invention relates to the field of filters, in particular to a co-resonator filter.

Background

The filter is a typical frequency selection device, which can effectively suppress the useless signals, so that the useless signals cannot pass through the filter, and only the useful signals smoothly pass through the filter, therefore, the quality of the performance of the filter directly affects the quality of the whole communication system, and the filter is a vital device in modern microwave and millimeter wave communication systems.

The cavity filter is an important filter, and compared with filters with other properties, the cavity filter has the advantages of firm structure, stable and reliable performance, small volume, moderate Q value, far high-end parasitic passband and good heat dissipation performance, and can be used for higher power and frequency.

In the cavity filter, the size of the resonance rod and the distance between the top of the resonance rod and the cover plate determine the resonant frequency of the cavity, and the longer the resonance rod is, or the closer the resonance rod is to the cover plate, the lower the resonant frequency of the cavity is. The most common method of resonant frequency adjustment is the tuning screw, which is driven lower the resonant frequency. Furthermore, the size of the tuning screw also affects the range of adjustment, and a lower resonance frequency can be obtained with a thicker tuning screw than with a thinner tuning screw, if the resonance frequency is too low the resonant bar should be considered shorter, if the resonance frequency is too high the resonance frequency can be reduced by increasing the screw size, or using a mushroom-shaped resonant bar, or lengthening the resonant bar. Furthermore, the resonant rod is processed into a mushroom shape, which also has the effect of lowering the resonant frequency.

With the gradual development of communication technology, the size of devices is gradually reduced, in order to achieve the purpose of miniaturization, a sheet metal filter is mostly adopted in the prior art, a cavity is made in a die casting mode or a machining mode, the width of a radial strip is made to be narrow, weight reduction processing is carried out, a resonance rod is made of sheet metal materials into a resonance piece, the height of the resonance piece is reduced by more than 1/2 of a conventional filter, the goal of miniaturization is achieved, but electrical performance indexes are not lost, the size requirement is determined through simulation, the debugging difficulty can be further reduced, the assembly time of the filter is shortened through a welding process, and the efficiency is improved.

However, the existing sheet metal filter has the disadvantages of high production cost and difficult installation because the cavities and parts in the cavities are mostly independent and the size is very small.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the common resonator filter which is low in production cost, high in efficiency and simple in installation process.

In order to achieve the purpose, the invention adopts the specific scheme that: a resonator filter comprises a base body, a cover plate, a resonance piece and a plurality of adjusting screws, wherein the base body is provided with a plurality of cavities, two adjacent cavities are separated through a partition plate, at least one adjusting screw extends into each cavity, the resonance piece comprises a connecting portion and a plurality of extending portions, the connecting portion and the extending portions are connected integrally, and the extending portions extend into the cavities in a one-to-one correspondence mode.

As a preferred scheme, all the partition plates are fixedly connected with a support plate, at least one resonant plate positioning pin is fixedly connected to the support plate, and at least one resonant plate positioning hole corresponding to the resonant plate positioning pin is formed in the bottom of the connecting portion.

As a preferred scheme, the supporting plate and the connecting part are both provided with tin hiding grooves.

As a preferred scheme, at least one cover plate positioning pin is fixedly connected to the base body, and at least one cover plate positioning hole corresponding to the cover plate positioning pin is formed in the cover plate.

As a preferred scheme, a connecting groove extending up and down is formed in the extending portion, a connecting wire or a connecting piece is arranged in the connecting groove, the connecting wire penetrates out of the base body, and the connecting piece is used for achieving electric connection of the two extending portions.

Preferably, the connecting member includes a horizontal portion and two vertical portions, the two vertical portions are integrally connected to both ends of the horizontal portion, respectively, and the vertical portions are inserted into the connecting grooves.

As a preferred scheme, both ends of the connecting portion are respectively provided with a positioning groove extending up and down, and the base body is fixedly connected with a positioning strip corresponding to the positioning groove.

As a preferable scheme, a flying bar assembly for coupling the two cavities is fixedly connected to the inner side of the cover plate, the flying bar assembly comprises a flying bar and a fixing unit for fixing the flying bar on the cover plate, and two ends of the flying bar are respectively located above the two cavities.

As a preferable scheme, the fixing unit comprises a connecting seat and a pressing piece, wherein the pressing piece sequentially penetrates through the flying bar, the connecting seat and the cover plate.

Has the advantages that: when the resonant cavity sensor is used, the extending parts play a role of resonant rods in the traditional cavity sensor, and the connecting parts connect all the extending parts into a whole, so that the resonant chip can be directly formed in the processing process by die casting or carving and the like, thereby reducing the production cost and improving the production efficiency.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is an elevated view of a resonator plate according to the present invention;

FIG. 3 is an elevated view of the substrate of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.

Referring to fig. 1 to 3, a resonator filter includes a base 9, a cover plate 3, a resonator plate and a plurality of tuning screws 1, wherein the base 9 is provided with a plurality of cavities 11, two adjacent cavities 11 are separated by a partition plate 10, at least one tuning screw 1 extends into each cavity 11, the cover plate 3 is provided with a first screw hole 4 for the tuning screw 1 to pass through, the resonator plate includes a connecting portion 8 and a plurality of extending portions 6 which are integrally connected, and the extending portions 6 extend into the cavities 11 in a one-to-one correspondence manner.

When the resonant cavity sensor is used, the extending parts 6 play a role of resonant rods in the traditional cavity sensor, and the connecting parts 8 connect all the extending parts 6 into a whole, so that the resonant chip can be directly formed in the processing process through die casting or carving and the like, the production cost is reduced, the production efficiency is improved, the resonant chip can be installed at one time in the installation process, each extending part 6 does not need to be independently adjusted, the installation process is simplified, and the production efficiency is further improved.

Furthermore, all the partition boards 10 are fixedly connected with a support plate 24, the support plate 24 is fixedly connected with at least one resonant chip positioning pin 7, and the bottom of the connecting portion 8 is provided with at least one resonant chip positioning hole 5 corresponding to the resonant chip positioning pin 7. The resonant chip positioning pin 7 is matched with the resonant chip positioning hole 5 to be used for positioning the resonant chip, so that errors in the installation process are avoided. The number of the resonator plate positioning pins 7 can be determined according to the shape, and if the cross section of the resonator plate positioning pin 7 is a polygon such as a rectangle or a triangle, only one resonator plate positioning pin needs to be provided, and if the cross section of the resonator plate positioning pin 7 is a circle, at least two resonator plate positioning pins need to be provided.

Furthermore, the support plate 24 and the connecting portion 8 are both provided with tin hiding grooves 19. The tin hiding groove 19 formed in the support plate 24 is used for containing soldering tin for welding the support plate 24 and the connecting portion 8, the tin hiding groove 19 formed in the connecting portion 8 is used for containing soldering tin for welding the connecting portion 8 and the cover plate 3, when in welding, firstly, tin paste is put into the tin hiding groove 19, and then, the welding is carried out in a high-temperature reflow soldering mode. The invention can support single-cavity, double-cavity or multi-cavity forms, wherein the single cavity means that all cavities 11 are arranged on one side of the connecting part 8, the partition plate 10 can ensure that the cavities 11 are completely separated, the double-cavity means that the cavities 11 are distributed on two sides of the connecting part 8, at the moment, after welding, soldering tin can completely fill up gaps between the connecting part 8 and the supporting plate 24, so that the cavities 11 on two sides are completely separated, the multi-cavity means that the connecting part 8 is arranged into a special-shaped piece to separate a plurality of spaces, each space is provided with a plurality of cavities 11, and at the moment, the soldering tin can also realize the complete separation of the cavities 11 in different spaces.

Further, the base body 9 is fixedly connected with at least one cover plate positioning pin 23, and the cover plate 3 is provided with at least one cover plate positioning hole 2 corresponding to the cover plate positioning pin 23. The positioning mode of the cover plate positioning pin 23 is similar to that of the resonant plate positioning pin 7, and is not described in detail.

Furthermore, a connecting groove 18 extending up and down is formed in the extending portion 6, a connecting wire 12 or a connecting member 17 is arranged in the connecting groove 18, wherein the connecting wire 12 penetrates out of the base body 9, and the connecting member 17 is used for realizing the electrical connection of the two extending portions 6. The connecting line 12 and the connecting piece 17 are inserted according to the method, which is convenient and fast. The connecting wire 12 can also be fixed by a fixing member 13.

Further, the connecting member 17 includes a horizontal portion and two vertical portions integrally connected to both ends of the horizontal portion, respectively, and the vertical portions are inserted into the connecting grooves 18.

Furthermore, two ends of the connecting portion 8 are respectively provided with a positioning groove 20 extending up and down, and the base body 9 is fixedly connected with a positioning strip 22 corresponding to the positioning groove 20. The detent 20 and the detent bar 22 cooperate to reinforce the resonator plate.

Further, a flying bar assembly for coupling the two cavities 11 is fixedly connected to the inner side of the cover plate 3, the flying bar assembly includes a flying bar 15 and a fixing unit for fixing the flying bar 15 on the cover plate 3, wherein two ends of the flying bar 15 are respectively located above the two cavities 11.

Further, the fixing unit comprises a connecting seat 14 and a pressing piece 16, wherein the pressing piece 16 sequentially penetrates through the flying bar 15, the connecting seat 14 and the cover plate 3. In this embodiment, the connecting seat 14 is configured as a sleeve, the pressing member 16 is configured as a bolt, and the flying bar 15 is correspondingly provided with a second screw hole 21 for passing through the bolt.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.