CN110289470A - A kind of three-stage filter - Google Patents
A kind of three-stage filter Download PDFInfo
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- CN110289470A CN110289470A CN201910239662.7A CN201910239662A CN110289470A CN 110289470 A CN110289470 A CN 110289470A CN 201910239662 A CN201910239662 A CN 201910239662A CN 110289470 A CN110289470 A CN 110289470A
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- cavity
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- cover plate
- partition
- piece
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- 238000005192 partition Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000003466 welding Methods 0.000 abstract description 14
- 238000013461 design Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 9
- 238000004512 die casting Methods 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000019491 signal transduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A kind of three-stage filter, including cavity, several resonant cavities are divided by partition in cavity, resonance piece is provided in each resonant cavity, resonance piece in two neighboring resonant cavity is connected with each other, winged pole socket is installed on two of them partition, fly that winged bar piece is installed on pole socket, winged bar line is installed on two of them resonance piece, the cavity is the structural member that top and bottom are open, partition and resonance piece are implanted on cavity wall, partition and resonance piece are structure as a whole with cavity, cavity upper end cover is equipped with upper cover plate, the lower cover of cavity is equipped with lower cover plate, upper cover plate and lower cover plate cooperation seal cavity hatch.The present invention splits mode using three-stage, and resonance piece and cavity use integral structure, and increase lower cover plate, simplify inner body quantity, optimize assembling mode, avoids the separately installed of resonance piece and welding, resonance piece and cavity integrated design solve the difficult point welded in production process.
Description
Technical field
The present invention relates to modern communications fields, more particularly, to a kind of three-stage filter.
Background technique
Filter is a kind of typical frequency selection device, it can effectively inhibit garbage signal, prevent it from passing through
Filter, only useful signal pass through filter, and therefore, the superiority and inferiority of performance of filter directly influences entire communication system
Quality, be modern microwave, vital device in millimeter-wave communication system.
Cavity body filter is a kind of very important filter, compared with the filter of other properties, sound construction, and performance
Reliable and stable, small in size, Q value is moderate, and high side parasitic passband farther out and perfect heat-dissipating, can be used for relatively high power and frequency.
The first scheme-cavity body filter, coupled structure generally use rod-shaped resonant rod, and corresponding coupling adjusts dress
It installs in the side of resonant rod, regulator for coupling generallys use metal and flies bar, or flies bar rear and front end in metal and increase
Fly bar disk, to realize the coupling with resonant rod.
However this regulator for coupling is only applicable to the coupling with rod-shaped resonant rod.As modern communications field front end is set
Standby to have more more and more urgent demand to the miniaturization of the components such as duplexer, combiner, filter, the duplexer of miniaturization closes
When resonant rod used by the components such as road device, filter is no longer rod-shaped resonant rod, it is some miniaturization, high request product pair
Stiffness of coupling requirement is higher, and the even summation intensity adjustable extent of traditional regulator for coupling is small, is also no longer applicable in.
The adjustable coupled structure of second scheme-cavity body filter, including two end resonant cavities, two ends are humorous
Several middle resonant cavities are provided between vibration chamber, two end resonant cavities and several middle resonant cavities are along straight uniform point
Cloth, there are gap between middle resonant cavity and end resonant cavity between two adjacent middle resonant cavities, in each gap
One adjusting screw of up and down setting, middle resonant cavity are fixedly connected with horizontal-extending first resonance piece, end resonance
Chamber is fixedly connected with horizontal-extending second resonance piece, and between the first resonance piece and the second resonance piece or any two first are humorous
It is connected between vibration piece by coupling piece, specific filter as shown in Figure 2 includes cavity 10, and cavity 10 is the knot of upper end opening
Component, inside cavity are separated out several resonant cavities by partition, and resonance piece 9 is provided in resonant cavity, and resonance piece 9 is welded on cavity
Winged pole socket 3 is installed on the welding stage on 10 side walls, on partition, flies that winged bar piece 4 is installed on pole socket 3, winged bar is installed on resonance piece 9
Line 11,10 upper cover of cavity are equipped with cavity cover plate 8, are provided on cavity cover board 8 and adjust spiral shell combination 1, are equipped on 10 bottom of cavity slotting
Needle 6,6 one end of contact pin are welded on resonance piece 9, and the other end is welded on coupling plate, contact pin 6 by contact pin medium 5 and cavity 10 every
It leaves.
When using second scheme, since filter is to miniaturization, lightweight develops, to reach compared with high electrical property index
And consistency of performance, to product size, Geometrical Tolerance Principle is higher and higher.Common production technology is that aluminium alloy compression casting forms again
Machine adds the region high to dimensional tolerance and Geometrical Tolerance Principle.
Die casting is by liquid or semi-solid-state metal under high pressure effect, and it is intracavitary to be pressed into precision machined die cast metal type, is made
It is filled up completely type chamber, clear-cut to obtain, and any surface finish is consistent with die casting cavity dimension, the workpiece that can be interchanged.Die casting
It is to develop faster one in a kind of production efficiency and the relatively high heat processing technique and modern mechanical manufacturing of mechanization degree
The few chip of kind, the process of chipless.
Product is heated from the solid process of solid-liquid-during Die Casting.Product structure design, mold design, pressure
Cast tool parameters, the factors such as product stress release, all can to make shaped article actual size and ideal dimensions generation deviation, product
Surface roughness flatness is poor, the bad phenomenons such as whole deformation.To meet product miniaturization and consistency of performance demand, usually
It needs to process a large amount of fitting surface and functional surfaces with numerically-controlled machine tool, increases huge product processing cost.
Because product outline size is compact, inner space very little, (such as resonance piece flies bar piece to filter internal structure part, flies
Bar line) assembling it is extremely difficult, increase a large amount of built-up time costs.
The third scheme-filter split mode (by vertical folding separation structure improvement be left and right side core-pulling structure), resonance piece with
Cavity integration, simplifies inner body quantity, optimizes assembling mode, improves production efficiency.It is produced using novel die-casting process guarantee
Product size/geometric tolerance, surface roughness flatness add product without numerical controlled machine-tool, and filter as shown in Figure 1 includes
First cavity 7 and the second cavity 2 are provided with several spaced resonant cavities in first cavity 7, are fixed on the second cavity 2
Several spaced resonance pieces, the second cavity 2, which is inserted into the first cavity 7, forms airtight cavity, and resonance piece is inserted into resonant cavity,
Winged pole socket 3 is installed on the partition of resonant cavity two sides, flies that winged bar piece 4 is installed on pole socket 3, tune is installed on the top of the first cavity
Spiral shell combination 1,7 bottom of the first cavity are equipped with contact pin 6, and contact pin 6 is isolated by contact pin medium 5 with the first cavity 7, and the one of contact pin 6
End extends into the first cavity and is welded on resonance piece, and the other end of contact pin is welded on the coupling plate of antenna.
When using the third scheme, when inside contact pin is welded, sealing state is enclosed in exocoel, Wu Jiaguan is looked into or confirmed and inserts
The welding situation of needle and resonance piece.First cavity is affected to electric property with the second cavity relative displacement.Weld seam is not one
In a plane, welding difficulty is larger, if intracavitary stream tin is affected to performance.It is coupled through welding manner with antenna PCB, is tieed up
It repairs dismounting and replacement is inconvenient.
Summary of the invention
The purpose of the present invention is provide one kind to solve the problems, such as that the big replacement of existing filter processing assembling cost is inconvenient
Three-stage filter.
The deficiency of the present invention to solve above-mentioned technical problem, used technical solution is:
A kind of three-stage filter, including cavity, cavity is interior to be divided into several resonant cavities by partition, is all provided in each resonant cavity
It is equipped with resonance piece, the resonance piece in two neighboring resonant cavity is connected with each other, and is equipped with winged pole socket on two of them partition, flies pole socket
On winged bar piece is installed, winged bar line is installed, the cavity is the knot that top and bottom are open on two of them resonance piece
Component, partition and resonance piece are implanted on cavity wall, and partition and resonance piece are structure as a whole with cavity, and cavity upper end cover is set
There is upper cover plate, the lower cover of cavity is equipped with lower cover plate, and upper cover plate and lower cover plate cooperation seal cavity hatch.
Several tune spiral shell combinations for adjusting performance of filter are provided on the upper cover plate.
Contact pin mounting hole is offered on the lower cover plate, contact pin medium is installed in contact pin mounting hole, in contact pin medium
It is equipped with spring base, wherein one end extends in resonant cavity and connect with resonance piece spring base, slides on the other end of spring base
Spring needle for connecting antenna coupling plate is installed, the reset of push the spring needle reset is installed between spring needle and spring base
Spring.
The ring flange for ground connection is provided on the outside of the contact pin mounting hole.
The beneficial effects of the present invention are: the present invention splits mode using three-stage, resonance piece is with cavity using integrated knot
Structure, and increase lower cover plate, simplify inner body quantity, optimize assembling mode, avoids the separately installed of resonance piece and welding, resonance
Piece and cavity integrated design solve the difficult point welded in production process.Integrally die sinking forms for resonance piece and cavity, product size
Precision is high, and consistency of performance is good.Using microdiecast moulding process, key position or the demanding region of size are not necessarily to rear machine
Add, improves delivery efficiency, cost is greatly reduced.Production efficiency is improved, inside cavity can be cut by wire cutting mode primary line
Type adds without expensive CNC machine, substantially drops this, and improve production efficiency, changes filter and antenna installs combination,
Radiofrequency signal cooperates reset spring to carry out signal transduction by spring needle and spring base.
Detailed description of the invention
Fig. 1 is the filter that traditional left and right splits structure.
Fig. 2 is traditional filter for splitting structure up and down.
Fig. 3 is the filter of three stage structure in the application.
Fig. 4 is that cavity body structure casts the structural schematic diagram to be formed in the application.
Fig. 5 is the structural schematic diagram of filter use state in the application.
It illustrates label 1, adjust spiral shell combination；2, the second cavity；3, fly pole socket；4, fly bar piece；5, contact pin medium；6, contact pin；7,
Second cavity；8, cavity cover board；9, resonance piece；10, cavity；11, fly bar line；12, upper cover plate；13, lower cover plate；14, spring base；
15, reset spring；16, spring needle；17, floor；18, antenna coupling plate.
Specific embodiment
As shown in the figure, specific embodiment is as follows:
A kind of three-stage filter, including cavity 10 are divided into six resonant cavities by partition in cavity 10, in each resonant cavity
It is provided with resonance piece, the resonance piece in two neighboring resonant cavity is connected with each other, winged pole socket 3 is installed on two of them partition,
Fly that winged bar piece 4 is installed on pole socket 3, winged bar line 11 is installed on two of them resonance piece, the cavity 10 is upper end under
The structural member being open is held, partition and resonance piece are implanted on 10 side wall of cavity, and partition and resonance piece are integrated with cavity 10
Structure, 10 upper end cover of cavity are equipped with upper cover plate 12, and the lower cover of cavity 10 is equipped with lower cover plate 13, and upper cover plate 12 and lower cover plate 13 are matched
It closes and seals 10 opening of cavity.Several tune spiral shell combinations 1 for adjusting performance of filter are provided on the upper cover plate 12.
Contact pin mounting hole is offered on the lower cover plate 13, and contact pin medium 5 is installed in contact pin mounting hole, is equipped in contact pin medium
Spring base 14, wherein one end extends in resonant cavity and connect with resonance piece spring base 14, slides on the other end of spring base 14
Spring needle 16 for connecting antenna coupling plate is installed, the reset of push the spring needle is installed between spring needle 16 and spring base 14
Reset spring 15.The elastic acting force of reset spring 15 heads on spring needle 16 and is connect with antenna coupling plate 17 without welding admittedly
It is fixed, the ring flange for ground connection is provided on the outside of the contact pin mounting hole.
Traditional cavity will be divided into two by the application, be split as cavity and lower cover plate two parts.Resonance piece and cavity one
Die sinking molding.Spring base and spring needle are crimped together by spring.The contact pin peace being pressed into again in insertion medium holes on lower cover plate
It fills in hole, and welds together with the resonance piece of cavity one, lower cover plate assembles together with cavity welding and flies bar piece and fly
Bar line.At this point, cavity top is in open state, it can clearly observe that whether good assembled inside and welding be reliable.Really
Recognize errorless cover board of burn-oning again and complete assembling, into mode link.
Integrally die sinking forms for resonance piece and cavity, to prevent resonance piece from changing, can connect comb load with cavity wall
It forming floor and increases stability, the shape for being once cut into needs is then cut by line, dimensional accuracy is high, adds without upper CNC machine,
Cost is greatly reduced.
The present invention changes the connection type of conventional filter Yu AFU antenna, by its first three contact pin (M signal, both ends
Ground connection) method optimizing be spring needle transmit signal, outer peripheral flange disk ground connection, solves the problems, such as filter reprocess dismounting inconvenience.It adopts
With pogo-pin structure, do not add tin welding repeatedly, reduces and the mechanical high-temperature of pcb board and filter is damaged, improve finished product yield.
If Fig. 2 tradition this filter of chamber is using fractionation structure up and down.When production and assembly:
1, first by winged bar wire bonding on the pad of resonance piece, then resonance piece is welded on the stepped locations of cavity side side.It is humorous
Vibration piece and cavity welding are long cantilever structure after one, and the reliability of welding, flatness directly affects filter working frequency.
2, winged pole socket is inserted into cavity guide groove, winged bar piece is placed into, covers winged pole socket top half.
3, contact pin is inserted into contact pin medium holes, is then inserted into cavity bottom limit limit, contact pin and resonance piece is welded
It connects and combines.
4, cover board, which screws in, adjusts spiral shell component, paints tin cream in cover board bottom surface, seals with cavity, is incorporated in by high temperature reflux weldering
Together.
Due to inside cavity narrow space, assembly welding precision is difficult to ensure, performance of filter will unanimously be not being met.
Cavity is to reach the dimensional accuracy being consistent with design requirement in process of production, and die sinking part would generally reserve key
The machining allowance of position after product depanning, then is added by numerical controlled machine-tool, will increase production cost.Mass production when especially
When, often deliver bottleneck.
Traditional scheme as shown in figure 1 splits structure, innovation structure design, by resonance piece and cavity design at one using left and right
Body eliminates and most complicated requires highest welding sequence.After completing internal structure assembling, by the first cavity and the second cavity soldering and sealing
, but the first cavity is affected to electric property with the second cavity relative displacement.Weld seam in one plane, does not weld
Difficulty is larger, if intracavitary stream tin is affected to performance.
1, traditional scheme cavity, which is opened, need to reserve the machining allowance of key position, as thimble position need to protrude about 0.3mm, then by
Subsequent machine adds mill off.Capillary boss is grounded since diameter is too thin, need to being opened overstriking, machine adds the size for milling out needs, cover board soldering and sealing again
Face needs machine to add guarantee flatness due to planarity requirements height.
2, it is described in detail for microdiecast:
Traditional thermal die casting machine is usually that two pieces of moulds are formed, and when molding is locked by two pieces of modules via oil pressure, two module knots
After conjunction, liquid metal is injected in die cavity by shunting son and runner, therefore air is be easy to cause to be involved in die cavity, in order to avoid this shape
Condition generates, and common way is addition overflowing well around finished product or designs gas vent, causes waste material specific gravity high, speed of production
Slowly, it is easy to produce flash, die life is short, costly and cumbersome, high energy consumption etc..
Microdiecast replaces traditional two block combiners using 2-6 standalone module, and liquid metal is via dividing mould when molding
Line is directly cast into die cavity, reduces consumption, is saved the energy, is saved secondary operation, substantially reduce production cost.
Multiaxial type mold design, structure diversification, die joint selection elasticity is big (face 2-6), can pull out from any angle, direction
Mould, for Product Precision up to 0.02mm, wall thickness is most thin to accomplish 0.2mm.
Compared to old scheme, add thimble position, capillary boss without machine, cavity cover board soldering and sealing face greatly improves production efficiency
And homogeneity of product.
Technical solution cited by the present invention and embodiment and non-limiting, with technical solution cited by the present invention and
Embodiment is equivalent or effect same approach is all in the range of the present invention is protected.
Claims (4)
1. a kind of three-stage filter, including cavity, several resonant cavities are divided by partition in cavity, it is equal in each resonant cavity
It is provided with resonance piece, the resonance piece in two neighboring resonant cavity is connected with each other, and is equipped with winged pole socket on two of them partition, flies bar
Winged bar piece is installed on seat, winged bar line is installed on two of them resonance piece, it is characterised in that: the cavity is upper end under
The structural member being open is held, partition and resonance piece are implanted on cavity wall, and partition and resonance piece are structure as a whole with cavity,
Cavity upper end cover is equipped with upper cover plate, and the lower cover of cavity is equipped with lower cover plate, and upper cover plate and lower cover plate cooperation are close by cavity hatch
Envelope.
2. a kind of three-stage filter according to claim 1, it is characterised in that: be provided on the upper cover plate several
Tune spiral shell for adjusting performance of filter combines.
3. a kind of three-stage filter according to claim 1, it is characterised in that: offer contact pin on the lower cover plate
Mounting hole is equipped with contact pin medium in contact pin mounting hole, spring base is equipped in contact pin medium, wherein one end extends to spring base
It is connect in resonant cavity and with resonance piece, the spring needle for connecting antenna coupling plate is slidably fitted on the other end of spring base,
The reset spring of push the spring needle reset is installed between spring needle and spring base.
4. a kind of three-stage filter according to claim 1, it is characterised in that: set on the outside of the contact pin mounting hole
It is equipped with the ring flange for ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239662.7A CN110289470B (en) | 2019-03-27 | 2019-03-27 | Three-section filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239662.7A CN110289470B (en) | 2019-03-27 | 2019-03-27 | Three-section filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110289470A true CN110289470A (en) | 2019-09-27 |
| CN110289470B CN110289470B (en) | 2024-07-09 |
Family
ID=68001212
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239662.7A Active CN110289470B (en) | 2019-03-27 | 2019-03-27 | Three-section filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854485A (en) * | 2019-10-18 | 2020-02-28 | 广东通宇通讯股份有限公司 | Common resonator filter |
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|---|---|---|---|---|
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
| JP2014049867A (en) * | 2012-08-30 | 2014-03-17 | Nec Corp | Resonator filter |
| CN205595458U (en) * | 2016-04-26 | 2016-09-21 | 广东通宇通讯股份有限公司 | Antenna is transferred to electricity that inside collection of a plurality of RCU allies oneself with |
| CN205666361U (en) * | 2016-06-07 | 2016-10-26 | 深圳市讯方技术股份有限公司 | Bouncing -pin type connector |
| WO2018119669A1 (en) * | 2016-12-27 | 2018-07-05 | 华为技术有限公司 | Resonator and communication device |
| CN109509947A (en) * | 2018-12-05 | 2019-03-22 | 广东通宇通讯股份有限公司 | A kind of contact pin linking cavity body filter |
| CN209896219U (en) * | 2019-03-27 | 2020-01-03 | 广东通宇通讯股份有限公司 | Three-section filter |
-
2019
- 2019-03-27 CN CN201910239662.7A patent/CN110289470B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
| JP2014049867A (en) * | 2012-08-30 | 2014-03-17 | Nec Corp | Resonator filter |
| CN205595458U (en) * | 2016-04-26 | 2016-09-21 | 广东通宇通讯股份有限公司 | Antenna is transferred to electricity that inside collection of a plurality of RCU allies oneself with |
| CN205666361U (en) * | 2016-06-07 | 2016-10-26 | 深圳市讯方技术股份有限公司 | Bouncing -pin type connector |
| WO2018119669A1 (en) * | 2016-12-27 | 2018-07-05 | 华为技术有限公司 | Resonator and communication device |
| CN109509947A (en) * | 2018-12-05 | 2019-03-22 | 广东通宇通讯股份有限公司 | A kind of contact pin linking cavity body filter |
| CN209896219U (en) * | 2019-03-27 | 2020-01-03 | 广东通宇通讯股份有限公司 | Three-section filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854485A (en) * | 2019-10-18 | 2020-02-28 | 广东通宇通讯股份有限公司 | Common resonator filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110289470B (en) | 2024-07-09 |
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