CN208753483U - Cavity body filter - Google Patents
Cavity body filter Download PDFInfo
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- CN208753483U CN208753483U CN201821305182.3U CN201821305182U CN208753483U CN 208753483 U CN208753483 U CN 208753483U CN 201821305182 U CN201821305182 U CN 201821305182U CN 208753483 U CN208753483 U CN 208753483U
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Abstract
The embodiment of the present application provides a kind of cavity body filter, including tap, box body, multiple resonant rods, and the tap setting is on the box body, for adjusting the parameter of the cavity body filter；Each resonant rod is parallel to each other and is equipped with fixing end and free end, the fixing end is fixed on the box body, each resonant rod is independent resonator, coupling window is formed between adjacent resonators, the resonator and the coupling window-shaped are at the microwave structure with filter function, the resonator and the coupling window have constant parameter, reach convenient for debugging, reduce size, increase the purpose of reliability, time and the work step of debugging process are reduced, and can realize batch production cavity body filter.
Description
Technical field
The utility model relates to wave filter technology field more particularly to a kind of cavity body filters.
Background technique
Filter is the key equipment of modern mobile communcations system, is widely used in wireless communication base station, to eliminate
The clutter and interference signal other than signal frequency are needed, is a kind of common frequency-selecting device.There are many multiplicity, lumens for filter
Fluid filter is favored because it has the characteristics that firm in structure, working frequency range is high, loss is low, it is high to bear power.
Cavity body filter is a kind of pure structural device, and the structure that performance indicator and reliability both depend on itself is special
Sign., using resonant cavity structure, each resonant rod is independent resonator for it, forms coupling window between adjacent resonators
Mouthful, the resonator and coupling window-shaped realize microwave filtering function at the microwave structure with filter function.Fig. 1 is tradition
The main view of filter, Fig. 2 are the left views of conventional filter, as depicted in figs. 1 and 2, the debugging of traditional cavity body filter
Mechanism needs one by one to assemble tuning screw, locking nut and cover board using tools such as screwdriver, spanners, completes tens
The performance indicator of the assembly of a tuning screw and locking nut, cavity body filter is very sensitive to hardware configuration size, so that adjusting
The complexity of examination process is double, and the workload of debugging and the working hour spent are all multiplied, and are difficult to the debugging reached
Effect.There are also be exactly, due to there is the presence of nut and screw rod, always to have one above cover board by the way of the adjusting of this frequency
Point space can not efficiently use, and as filter parameter requires to be increasingly stringenter, while the unserviceable space in this part
The overall performance of filter is seriously affected.
To sum up, traditional cavity body filter is made, needing manual assembly to twist nail and electrical property manual debugging makes to produce
Product meet user's index request, waste a large amount of human and material resources, financial resources and time.And in the limited situation of narrow space, it presses
It will be difficult to meet space requirement according to the cavity body filter of above-mentioned design method production.
Need that a kind of smaller, fine tuning examination, reliability be higher, cavity body filter convenient for batch production at present.
Utility model content
In view of this, the embodiment of the present application provides a kind of cavity body filter, to overcome cavity filtering in the prior art
The defects such as device size is larger, and debugging is difficult, wastes a large amount of human and material resources, financial resources, and reliability is low, reach convenient for debugging, reduce ruler
It is very little, increase reliability convenient for the purpose of batch production and reduce time and the work step of debugging process, and can realize batch
Produce cavity body filter.
To achieve the goals above, the embodiment of the present application provides a kind of cavity body filter, including tap, box body, multiple
Resonant rod, the tap setting is on the box body, for adjusting the parameter of the cavity body filter；Each resonant rod is mutual
Parallel and be equipped with fixing end and free end, the fixing end is fixed on the box body, and each resonant rod is independent resonance
Device forms coupling window between adjacent resonators, and the resonator and the coupling window-shaped are at the microwave with filter function
Structure, the resonator and the coupling window have constant parameter.
Optionally, in any embodiment of the application, the parameter of the resonator and the coupling window is according to electrical property
Energy the simulation results determine, so that the output wave of the filter is within the scope of preset wavelength.
Optionally, in any embodiment of the application, the resonant rod fixing end and the box body are integrally formed.
Optionally, in any embodiment of the application, the parameter value of the resonator is in the first preset parameter range
It is interior.
Optionally, in any embodiment of the application, the parameter value of the coupling window is in the second parameter preset model
In enclosing.
To sum up, cavity body filter provided by the embodiments of the present application, including tap, box body, multiple resonant rods, the tap are set
It sets on the box body, for adjusting the parameter of the cavity body filter；Each resonant rod is parallel to each other and is equipped with fixation
End and free end, the fixing end are fixed on the box body, and each resonant rod is independent resonator, between adjacent resonators
Form coupling window, the resonator and the coupling window-shaped at the microwave structure with filter function, the resonator with
The coupling window has constant parameter.Reach convenient for debugging, reduced size, has increased reliability, convenient for the mesh of batch production
, time and the work step of debugging process are reduced, and can realize batch production cavity body filter.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, embodiment or the prior art will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the main view of conventional filter.
Fig. 2 is the left view of conventional filter.
Fig. 3 is the main view of the embodiment of the present application cavity body filter.
Fig. 4 is the top cross-sectional view of the embodiment of the present application cavity body filter.
Fig. 5 is the left view of the embodiment of the present application cavity body filter.
Specific embodiment
Any technical solution for implementing the embodiment of the present application must be not necessarily required to reach simultaneously above all advantages.
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present application, below in conjunction with the application
Attached drawing in embodiment, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described reality
Applying example only is the embodiment of the present application a part of the embodiment, instead of all the embodiments.Based on the implementation in the embodiment of the present application
The range of the embodiment of the present application protection all should belong in example, those of ordinary skill in the art's every other embodiment obtained.
Further illustrate that the embodiment of the present application implements below with reference to the embodiment of the present application attached drawing.
Fig. 3 is the main view of the embodiment of the present application cavity body filter, and Fig. 4 is the vertical view of the embodiment of the present application cavity body filter
Sectional view, Fig. 5 is the left view of the embodiment of the present application cavity body filter, as shown in Fig. 3, Fig. 4 and Fig. 5, the reality of the application
It applies example and provides a kind of cavity body filter, including tap 3, box body 4, multiple resonant rods 5, the tap 3 is arranged in the box body 4
On, for adjusting the parameter of the cavity body filter；Each resonant rod 5 is parallel to each other and equipped with fixing end 51 and vacantly
End 52, the fixing end 51 is fixed on the box body 4, and each resonant rod 5 is independent resonator, adjacent resonators it
Between formed coupling window, the resonator and the coupling window-shaped are at the microwave structure with filter function, the resonator
There is constant parameter with the coupling window.
In the present embodiment, resonator and coupling window parameter constant in the cavity body filter, in use not
Need to carry out the conventional method that coupling is adjusted in big length tuning, it is only necessary to it is slight to adjust tap 3, therefore eliminate the filter of Fig. 1 tradition
Screw pin for tuning 1 and tune coupling pin 2 in wave device, so that the filter has very big change in outer dimension, and big
Width improves the efficiency that the cavity body filter batch produces production.
In the present embodiment, the parameter of the resonator and the coupling window is determined according to electrical property the simulation results,
So that the output wave of the filter is within the scope of preset wavelength.Before production, using simulation software, the cavity body filter
Electrical property emulation reach chip device throw version before state, resonant rod 5 in the cavity body filter is obtained by simulation result
Length and the position that should be arranged, since the length of resonant rod 5 and position have determined, in use also without tuning and adjusting
Coupling, so the parameter constant of resonator and coupling window is constant in the cavity body filter.
In the present embodiment, 5 fixing end 51 of resonant rod is integrally formed with the box body 4.Traditional cavity body filter it is humorous
The bar that shakes is screwed on box body, and there are reliability hidden danger, in the present embodiment, the resonant rod 5 and the box body 4 are straight
It connects integration to process, increases the reliability of the cavity body filter.
Specifically, the parameter value of the resonator is in the first preset parameter range.Described in being obtained as simulation result
The parameter of resonator might have some deviations in the production process, since production process has required precision, so setting first
Preset parameter range, so that the parameter of the resonator causes resonator in first preset parameter range, because producing
Parameter have certain error that can slightly be adjusted by the tap 3, can make the cavity body filter that must need
Output result.
Specifically, the parameter value of the coupling window is in the second preset parameter range.The institute obtained by simulation result
The parameter for stating coupling window, might have some deviations in the production process, since production process has required precision, so setting
Second preset parameter range, so that the parameter of the coupling window causes in first preset parameter range because producing
The parameter of coupling window has certain error that can slightly be adjusted by the tap 3, can make the cavity body filter
The output result that must be needed.
Optionally, in the embodiment of the application, the tap 3 is equipped with the first connecting pin and second connection end, Mei Gesuo
It is vertical with the line of first connecting pin and the second connection end to state resonant rod 5.
Optionally, in the embodiment of the application, first connecting pin is painted with away from the nearest use of the resonant rod 5
Envelope curve connection, the second connection end are connect with away from the nearest resonant rod 5 with enameled wire.The connecting pin and described
Resonant rod 5 can also be attached by other, such as silver jacketed wire.
It further, further include coupling enhancing structure 6, between two adjacent resonant rods 5, the coupling increases
Strong structure is the ridge processed from resonant rod root, is located between two adjacent resonance, enhances the coupling of the filter
Energy.
Statement " first ", " second " used in the various embodiments of the application, " first " or " described
Two " can modify various parts and unrelated with sequence and/or importance, but these statements do not limit corresponding component.The above statement
It is only used for the purpose for distinguishing element and other elements.For example, the first user equipment and second user equipment indicate different
User equipment, although being both user equipment.For example, first element can claim under the premise of without departing substantially from the scope of the present disclosure
Make second element, similarly, second element can be referred to as first element.
This specification " embodiment " refers to special characteristic, structure, in configuration or feature quilt described in the embodiment
It is included at least one embodiment of the present invention.Therefore, the phrase " in the embodiment of the application " of appearance is in this specification
The middle different places present invention not necessarily refers to identical embodiment.In addition, specific feature, structure, configuration or characteristic can be to appoint
What suitable mode combines in one or more embodiments.
Although the preferred of the utility model has been described, once a person skilled in the art knows substantially creative
Concept can then make other change and modification to these.So it includes preferably and falling that the following claims are intended to be interpreted as
Enter all change and modification of the scope of the utility model.Obviously, those skilled in the art can carry out the utility model each
Spirit and scope of the kind modification and variation without departing from the utility model.If in this way, these modifications and change of the utility model
Type belongs to the scope of the claims of the present invention and its equivalent technology, then the utility model is also intended to encompass these changes
Including modification.
Claims (5)
1. a kind of cavity body filter, which is characterized in that including tap, box body, multiple resonant rods, the tap setting is in the box
On body, for adjusting the parameter of the cavity body filter；Each resonant rod is parallel to each other and is equipped with fixing end and free end,
The fixing end is fixed on the box body, and each resonant rod is independent resonator, forms coupling window between adjacent resonators
Mouthful, the resonator and the coupling window-shaped are at the microwave structure with filter function, the resonator and the coupling window
Mouth has constant parameter.
2. cavity body filter according to claim 1, which is characterized in that the parameter of the resonator and the coupling window
It is determined according to electrical property the simulation results, so that the filter of the filter leads to wavestrip within the scope of preset wavelength.
3. cavity body filter according to claim 1, which is characterized in that the resonant rod fixing end and box body one
Molding.
4. cavity body filter according to claim 2, which is characterized in that the parameter value of the resonator is default first
In parameter area.
5. cavity body filter according to claim 2, which is characterized in that the parameter value of the coupling window is pre- second
Within the scope of setting parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821305182.3U CN208753483U (en) | 2018-08-14 | 2018-08-14 | Cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821305182.3U CN208753483U (en) | 2018-08-14 | 2018-08-14 | Cavity body filter |
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| Publication Number | Publication Date |
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| CN208753483U true CN208753483U (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821305182.3U Active CN208753483U (en) | 2018-08-14 | 2018-08-14 | Cavity body filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540986A (en) * | 2020-04-25 | 2020-08-14 | 合肥启谨电子科技有限公司 | QJ-B9370-120-N7A-4 cavity band-pass filter |
-
2018
- 2018-08-14 CN CN201821305182.3U patent/CN208753483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540986A (en) * | 2020-04-25 | 2020-08-14 | 合肥启谨电子科技有限公司 | QJ-B9370-120-N7A-4 cavity band-pass filter |
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