CN206422195U - A kind of new four moulds medium bandpass filter - Google Patents
A kind of new four moulds medium bandpass filter Download PDFInfo
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- CN206422195U CN206422195U CN201720035934.8U CN201720035934U CN206422195U CN 206422195 U CN206422195 U CN 206422195U CN 201720035934 U CN201720035934 U CN 201720035934U CN 206422195 U CN206422195 U CN 206422195U
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- medium
- medium block
- bandpass filter
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Abstract
The utility model discloses the new four moulds medium bandpass filter of one kind, the cylinder shape medium block of perforate, four tuning screws for controlling frequency are carried out in center including external cavity and four, the metal ring structure and input/output port coupled structure for controlling the short-contact metal post of frequency, two control to couple are used at filter center.The tuning screw of the control frequency is located in the through hole at cylinder shape medium block center, and the short-contact metal post of the control frequency is located at the center of wave filter；The resonant frequency of wave filter can be controlled by the size for the tuning screw for changing control frequency, the resonant frequency of wave filter can be controlled by the size for the short-contact metal post for changing control frequency, the resonant frequency of wave filter can be controlled by the center distance for changing medium block to wave filter, the stiffness of coupling of wave filter can be controlled by the size for changing the metal Coupling ring for controlling coupling.The advantages of the utility model has small volume, Q values height and easy processing.
Description
Technical field
The utility model is related to the technical field of dielectric filter, and in particular to one kind is using tuning screw, short-contact metal
Rod structure controls resonant frequency and the new four moulds medium strainer acceptor using the control coupling of metal Coupling ring structure.
Background technology
With the high speed development of wireless communication system, modern society has come into the epoch that a high speed information is propagated,
Moment visual information is transmitted at one's side ours, and radio communication has been widely used in the every field of social life,
Such as mobile communication, radar navigation and electronic countermeasure.Microwave filter has irreplaceable important work in wireless communication system
With, selection index system is played to the frequency communicated during radio communication, that is, suppresses unwanted frequency, prevent its from
Pass through, while allowing useful frequency to pass through, the fine or not performance often to whole wireless communication system of its performance has direct shadow
Ring.
In recent decades, information industry and wireless communication system have obtained quick development, are assigned to various types of communication system
In frequency interval it is more and more closeer, this just proposes higher requirement to the design of microwave filter, does not require nothing more than microwave filtering
The insertion loss of device is small, power capacity is big and Out-of-band rejection is high etc., it is also desirable to the small volume of wave filter and lightweight, in order to micro-
Wave filter carries out integrated and miniaturization in wireless communication system, and uses the dielectric material and Multimodal technology of high-k to set
The multimode dielectric filter of meter just meets the demand of development of wireless communication systems, and development is advanced by leaps and bounds, and is widely used in nothing
The field such as line base station and space flight and aviation.
2011, Luca Pelliccia and Fabrizio Cacciamani et al. was in Microwave Conference
Entitled " Ultra-compact pseudoelliptic waveguide filters are delivered on Proceedings (APMC)
Using TM dual-mode dielectric resonators " article.Author utilizes the dielectric resonance for having used TM moulds
Device, realizes two-chamber quadravalence bimodulus dielectric filter.The intracavitary coupling of the wave filter is by carrying out corner cut to outside wire chamber
Realize, by the size for controlling wire chamber corner cut, it is possible to achieve the control to intracavitary stiffness of coupling, coupling between the chamber of the wave filter
Conjunction is by being realized in the most strong position fluting of two cavity magnetic field intensities.
S.Yakuno and T.Ishizaki in 2012 delivers topic on Microwaves Conference Proceedings
For " Novel Cavity-Type Multi-Mode Filter using TEM-mode and TE-mode " article.Filtering
Device model includes the metal exocoel of a cylindrical type, the cylindrical dielectric resonator that two short at one end one end are opened a way and some tune
Humorous mechanism.Outside metal cylinder chamber is operated in half-wave resonator state, there are two orthogonal degenerate modes of electric field
TE11 moulds, and two cylindrical type dielectric resonators are operated in quarter-wave parity mode state equivalent to quasi- coaxial resonator,
Resonance is in TEM mode, and the coupling control of TE11 patterns and TEM mode is realized by tuning screw, in addition, TE11 patterns and
The FREQUENCY CONTROL of TEM mode is also to be realized by screw.
2009, M.Memarian and R.R.Mansour were sent out on IEEE Trans.Microwave.Theory Tech
Table title is " Quad-Mode and Dual-Mode Dielectric Resonator Filters " article.Author passes through circle
The HEE of post dielectric resonator11Degenerate mode and HEH11Degenerate mode realizes four mould medium bandpass filters.Author is led to first
The size ratio of dielectric resonator is overregulated by HEE11Degenerate mode and HEH11Together, then the resonant frequency of degenerate mode is adjusted
The control to intracavitary couples intensity and frequency is realized by adjusting screw, vertical screw mainly adjusts HEE11Degenerate mode
The frequency of formula and coupling, the screw of level mainly adjust HEH11The frequency of degenerate mode and coupling.
Utility model content
The purpose of this utility model be in order to solve drawbacks described above of the prior art there is provided one kind using tuning screw and
Short-contact metal rod structure controls four mould medium bandpass filters of frequency, while being realized using metal Coupling ring structure to four moulds
The control of medium bandpass filter mode of resonance coupling, it is functional, it is easy to processing.
The purpose of this utility model can be reached by adopting the following technical scheme that：
A kind of new four moulds medium bandpass filter, the four moulds medium bandpass filter includes external cavity 1, for believing
Number input or output the first input/output port 2 and the second input/output port 3, the He of the first input/output port 2
Second input/output port 3 is opened on the external cavity 1；
Center in the external cavity 1 is provided with metal column 8, the external cavity 1 and is additionally provided with first medium
Block 4, second medium block 5, the 3rd medium block 6 and the 4th medium block 7, each medium block are located at the surrounding of the metal column 8 respectively,
The metal column 8 and each medium block with the upper and lower surface short circuit of the external cavity 1；
In the first medium block 4, the second medium block 5, the 3rd medium block 6 and the 4th medium block 7
Manhole is offered at the heart；
The upper surface of external cavity 1 is provided with the first tuning screw 9, second tune screw 10, the 3rd tuning screw 11
And the 4th tuning screw 12, and it is located at the first medium block 4, the second medium block 5, the 3rd medium block respectively
6 and the center of the 4th medium block 7 manhole in；
U-shaped the first metal Coupling ring 13 and the second metal Coupling ring 14 is additionally provided with the external cavity 1, respectively position
In the both sides of the metal column 8, the opening direction direction of the first metal Coupling ring 13 and the second metal Coupling ring 14
The upper surface of the external cavity 1.
Further, first tuning screw 9, the second tune screw 10, the 3rd tuning screw 11 and
4th tuning screw 12 is used for the resonant frequency for controlling the four moulds medium bandpass filter.
Further, the resonant frequency of the four moulds medium bandpass filter is by changing first tuning screw 9, institute
State the size realization of second tune screw 10, the 3rd tuning screw 11 and the 4th tuning screw 12.
Further, the resonant frequency of the four moulds medium bandpass filter by change control the first medium block 4,
What the distance of the second medium block 5, the 3rd medium block 6 and the 4th medium block 7 to the metal column 8 was realized.
Further, the resonant frequency of the four moulds medium bandpass filter is real by the size for changing the metal column 8
Existing.
Further, the intracavitary stiffness of coupling of the four moulds medium bandpass filter is by changing first metal Coupling
The size of ring 13 and the second metal Coupling ring 14 is realized.
Further, first input/output port 2 and second input/output port 3 are using the same shaft end being grounded
Cause for gossip is existing.
Further, the port stiffness of coupling of first input/output port 2 and second input/output port 3 can
Realized by the distance of control port to medium block.
Further, the first medium block 4, the second medium block 5, the 3rd medium block 6 and the described 4th are situated between
Mass 7 is cylinder.
The utility model has the following advantages and effect relative to prior art：
1st, the control to four mould medium bandpass filter resonant frequencies is realized by tuning screw and short-contact metal rod structure,
It is easy to processing and manufacturing.
2nd, the control to stiffness of coupling is realized by metal Coupling ring, is equally easy to processing and manufacturing.
3rd, device design, with small volume, the advantages of Q values are high are filtered using four patterns.
Brief description of the drawings
Fig. 1 is a kind of structural representation of new four moulds medium bandpass filter disclosed in the utility model；
Fig. 2 is a kind of emulation schematic diagram of new four moulds medium bandpass filter disclosed in the utility model；
Fig. 3 is the top view of resonator in embodiment；
Fig. 4 be in the utility model resonant frequency with medium block to resonator center distance change curve；
Fig. 5 be in the utility model resonant frequency with short-contact metal column radius conversion curve；
Fig. 6 is the structure chart for the resonator that intracavitary coupled structure is provided with embodiment；
Fig. 7 is the side view of embodiment lumen Incoupling structure；
Fig. 8 be in the utility model lumen stiffness of coupling with metal Coupling ring height change curve；
Wherein, 1 --- external cavity, 2 --- the first input/output port, 3 --- the second input/output port, 4 ---
First medium block, 5 --- second medium block, 6 --- the 3rd medium block, 7 --- the 4th medium block, 8 --- metal column, 9 ---
First tuning screw, 10 --- second tune screw, 11 --- the 3rd tuning screw, 12 --- the 4th tuning screw, 13 ---
First metal Coupling ring, 14 --- the second metal Coupling ring.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Embodiment one
Present embodiment discloses one kind is using tuning screw and metal column structures control resonant frequency and uses metal coupling
Four mould medium bandpass filters of cyclization control coupling, it is functional, it is easily worked manufacture.
The structure of four mould medium bandpass filters is as shown in Figure 1.Wherein, 2 and 3 be the first of four mould medium bandpass filters
Input/output port and the second input/output port, when the first input/output port 2 is used as the defeated of four mould medium bandpass filters
During inbound port, the second input/output port 3 as four mould medium bandpass filters output port, conversely, when second input it is defeated
Exit port 3 as four mould medium bandpass filters input port when, the first input/output port 2 is used as bimodulus dielectric filter
Output port.1 is the external cavity of wave filter.4th, 5,6 and 7 be first medium block, the second medium in external cavity 1 respectively
Block, the 3rd medium block and the 4th medium block.8 be the metal column in external cavity 1.9th, 10,11 and 12 be on externally-located cavity
The first tuning screw, second tune screw, the 3rd tuning screw and the 4th tuning screw of granule surface contral frequency.13 and 14 points
The the first metal Coupling ring and the second metal Coupling ring of stiffness of coupling in control chamber Wei not be used in externally-located cavity 1.
A kind of new four moulds medium bandpass filter, including the input of external cavity 1, the first input/output port 2, second are defeated
Exit port 3.First input/output port 2 and second input/output port 3 are opened on the external cavity 1.
First medium block 4, second medium block 5, the 3rd medium block 6 and the 4th medium block are provided with the external cavity 1
7。
Metal column 8 is provided with the external cavity 1.The metal column 8 and the upper and lower surface short circuit of external cavity 1.
The metal column 8 is used for the resonant frequency for controlling the four moulds medium bandpass filter.
The upper surface of the external cavity 1 is provided with the first tuning screw 9, second tune screw 10, the 3rd tuning screw
11 and the 4th tuning screw 12.
First tuning screw 9, second tune screw 10, the 3rd tuning screw 11 and the 4th tuning screw 12 are used for
Control the resonant frequency of the four moulds medium bandpass filter.
The external cavity 1 is provided with the first metal Coupling ring 13 and the second metal Coupling ring 14.
The first metal Coupling ring 13 and the second metal Coupling ring 14 are used to control the four moulds medium bandpass filter
Intracavitary stiffness of coupling.
In concrete application, the control to the resonant frequency of four mould medium bandpass filters is by changing the first tuning screw
9th, the size of second tune screw 10, the 3rd tuning screw 11 and the 4th tuning screw 12 is realized.
In concrete application, be to the control of the resonant frequency of four mould medium bandpass filters by changing first medium block 4,
Second medium block 5, the 3rd medium block 6 and the 4th medium block 7 are realized to the distance of resonator center.
In concrete application, the control to the intracavitary stiffness of coupling of four mould medium bandpass filters is by changing the first metal
What the size of the metal Coupling ring 14 of coupling ring 13 and second was realized.
In the present embodiment, the first medium block 4, second medium block 5, the 3rd medium block 6 and the 4th medium block 7 are cylinder
Shape.
In the present embodiment, the first medium block 4, second medium block 5, the 3rd medium block 6 and the center of the 4th medium block 7
Offer manhole.
In concrete application, first input/output port 2 and second input/output port 3 are then using ground connection
What coaxial port was realized, the control of the port stiffness of coupling of first input/output port 2 and second input/output port 3
System is realized by the distance of control port to medium block.
In concrete application, the cavity 1 is using aluminium, copper, iron, gold or any one metal or any several gold in silver
The alloy of category makes.
In order to which the radius r apart from d and short-contact metal post of four medium blocks of access control to resonator center is situated between to four moulds
The tunning effect of the resonant frequency of matter bandpass filter, keeps the other parameters of four mould medium bandpass filters constant, right respectively
It takes different value to be emulated, and wherein Fig. 3 is the top view of resonator, and Fig. 4 and Fig. 5 are simulation results.
Can see by Fig. 4 simulation result, keep other parameters it is constant, with medium block to resonator center away from
Constantly increase from d, the resonant frequency of four patterns is in the trend risen in resonator；It can see, protect by Fig. 5 simulation result
Hold that other parameters are constant, as the radius r of short-contact metal post is constantly to increase, first pattern, second pattern in resonator
Resonant frequency with the 3rd pattern is in the trend risen, and the resonant frequency of the 4th pattern is held essentially constant.Therefore can be with
Four mould medium bandpass filters are realized by controlling medium block to the radius r apart from d and short-contact metal post at resonator center
Resonant frequency is controlled.
The intracavitary stiffness of coupling of four mould medium bandpass filters is controlled by metal Coupling ring, in order to verify metal coupling
Influence of the cyclization to intracavitary stiffness of coupling, keeps other parameters constant, takes different value to be imitated the height H of metal Coupling ring
Very, Fig. 6 is provided with the cavity resonator structure figure of intracavitary coupled structure, and Fig. 7 is provided with the resonator side view of intracavitary coupled structure
Figure, Fig. 8 is simulation result.
It can see by Fig. 8 simulation result, keep other parameters constant, constantly increase with the height H of metal Coupling ring
Greatly, intracavitary stiffness of coupling k is in the trend of lower rising, therefore by controlling the height H of metal Coupling ring to realize to intracavitary coupling
Close the control of intensity.
Embodiment two
As shown in figure 1, in the design of the present embodiment, the position of short-contact metal post is first determined according to the field distribution of resonator
Put, the position of the position of input/output port coupled structure and metal Coupling ring.The resonant frequency of four mould medium bandpass filters
Not only determined, while also suffering from the influence of tuning screw and short-contact metal post, led to by the size of medium block and external cavity
The radius of the insert depth and short-contact metal post of crossing control tuning screw can be realized to four mould medium bandpass filter resonance frequency
The control of rate.Meanwhile, by controlling the height of metal Coupling ring to realize the control to intracavitary stiffness of coupling.In this implementation
In example, the external diameter of cylinder shape medium block used is 15.2mm, and internal diameter is 4mm, is highly 7mm (first medium block, second in Fig. 1
The size of medium block, the 3rd medium block and the 4th medium block), the centre distance of medium block to resonator is 26.2mm (the in Fig. 1
The distance of one medium block, second medium block, the 3rd medium block and the 4th medium block to the metal column of resonator center), short circuit
The radius of metal column is 4mm (radius of metal column in Fig. 1), and the height of metal Coupling ring is 5mm (the first metal Couplings in Fig. 1
The height of ring and the second metal Coupling ring), the structure of the wave filter is as shown in figure 1, its simulation result is as shown in Figure 2.
Fig. 2 is the simulation curve of the frequency response of the four moulds medium bandpass filter.Can from Fig. 2 simulation result
Arrive, the return loss of the bimodulus dielectric filter is more than 12dB, insertion loss is less than 0.5dB, working frequency be 1.871GHz~
2.042GHz, with a width of 171MHz.
In summary, the utility model proposes a kind of design for controlling the frequency of four mould medium bandpass filters and coupling
Scheme.Under this scheme, it can be designed that four moulds medium bandpass filter of good performance.Due to four mould medium bandpass filters
Have the advantages that insertion loss is small, power capacity is big, Out-of-band rejection is high, small volume and lightweight, have wide in a communications system
General application.The utility model not only has good working characteristics, is also easy to processing and manufacturing, is conducive to actual industry raw
Production.The innovation of the wave filter is to realize to four mould medium bandpass filterings by tuning screw and short-contact metal rod structure
The control of device resonant frequency, while by controlling the height of metal Coupling ring to realize the control to intracavitary stiffness of coupling.
The utility model includes being not limited in the above-mentioned embodiment provided, and those skilled in the art are in the utility model
Design under, on the premise of the utility model principle is not departed from, different variations and alternatives can be made to the structure of wave filter,
For example change medium block shape and size, the size and dimension of coupled structure, the shape and size of FREQUENCY CONTROL structure and
Shape and size of external cavity etc., these deformations and replacement fall within this patent protection domain.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, are included within protection domain of the present utility model.
Claims (9)
1. a kind of new four moulds medium bandpass filter, the four moulds medium bandpass filter includes external cavity (1), for believing
Number input or output the first input/output port (2) and the second input/output port (3), first input/output port
(2) it is opened on the external cavity (1) with second input/output port (3)；
Center in the external cavity (1) is provided with metal column (8), the external cavity (1) and is additionally provided with first Jie
Mass (4), second medium block (5), the 3rd medium block (6) and the 4th medium block (7), each medium block are located at the metal respectively
The surrounding of post (8), the metal column (8) and each medium block with the upper and lower surface short circuit of the external cavity (1)；
The first medium block (4), the second medium block (5), the 3rd medium block (6) and the 4th medium block (7)
Center offer manhole；
External cavity (1) upper surface is provided with the first tuning screw (9), second tune screw (10), the 3rd tuning screw
(11) be located at and the 4th tuning screw (12), and respectively the first medium block (4), it is the second medium block (5), described
In 3rd medium block (6) and the manhole of the 4th medium block (7) center；
U-shaped the first metal Coupling ring (13) and the second metal Coupling ring (14) is additionally provided with the external cavity (1), respectively
The opening of both sides positioned at the metal column (8), the first metal Coupling ring (13) and the second metal Coupling ring (14)
Upper surface of the direction towards the external cavity (1).
2. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that the first tuning spiral shell
(9), the second tune screw (10) are followed closely, the 3rd tuning screw (11) and the 4th tuning screw (12) are used to control
Make the resonant frequency of the four moulds medium bandpass filter.
3. the new four moulds medium bandpass filter of one kind according to claim 2, it is characterised in that the four moulds medium belt
The resonant frequency of bandpass filter is by changing first tuning screw (9), the second tune screw (10), the 3rd tune
What the size of humorous screw (11) and the 4th tuning screw (12) was realized.
4. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that the four moulds medium belt
The resonant frequency of bandpass filter controls the first medium block (4), the second medium block (5), the described 3rd to be situated between by changing
What mass (6) and the 4th medium block (7) were realized to the distance of the metal column (8).
5. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that the four moulds medium belt
What the resonant frequency of bandpass filter was realized by changing the size of the metal column (8).
6. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that the four moulds medium belt
The intracavitary stiffness of coupling of bandpass filter is by changing the first metal Coupling ring (13) and the second metal Coupling ring (14)
Size realize.
7. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that first input is defeated
What exit port (2) and second input/output port (3) were realized using the coaxial port of ground connection.
8. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that first input is defeated
The port stiffness of coupling of exit port (2) and second input/output port (3) can be by the distance of control port to medium block
Realize.
9. the new four moulds medium bandpass filter of one kind according to claim 1, it is characterised in that the first medium block
(4), the second medium block (5), the 3rd medium block (6) and the 4th medium block (7) are cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035934.8U CN206422195U (en) | 2017-01-12 | 2017-01-12 | A kind of new four moulds medium bandpass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035934.8U CN206422195U (en) | 2017-01-12 | 2017-01-12 | A kind of new four moulds medium bandpass filter |
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| CN206422195U true CN206422195U (en) | 2017-08-18 |
Family
ID=59571190
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| CN201720035934.8U Expired - Fee Related CN206422195U (en) | 2017-01-12 | 2017-01-12 | A kind of new four moulds medium bandpass filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654476A (en) * | 2017-01-12 | 2017-05-10 | 华南理工大学 | Novel four-mode dielectric band-pass filter |
| CN109917191A (en) * | 2019-02-18 | 2019-06-21 | 中电科仪器仪表有限公司 | A kind of fission resonant cavity coupling ring installation adjusting device |
| CN111384482A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter applied to 5G communication system and communication equipment |
-
2017
- 2017-01-12 CN CN201720035934.8U patent/CN206422195U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654476A (en) * | 2017-01-12 | 2017-05-10 | 华南理工大学 | Novel four-mode dielectric band-pass filter |
| CN106654476B (en) * | 2017-01-12 | 2020-02-18 | 华南理工大学 | Four-mode dielectric band-pass filter |
| CN111384482A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter applied to 5G communication system and communication equipment |
| CN109917191A (en) * | 2019-02-18 | 2019-06-21 | 中电科仪器仪表有限公司 | A kind of fission resonant cavity coupling ring installation adjusting device |
| CN109917191B (en) * | 2019-02-18 | 2022-02-25 | 中电科思仪科技股份有限公司 | Installation and adjustment device for split resonant cavity coupling ring |
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Granted publication date: 20170818 Termination date: 20200112 |