CN108232385A - Millimeter wave filter fine tuning structure - Google Patents
Millimeter wave filter fine tuning structure Download PDFInfo
- Publication number
- CN108232385A CN108232385A CN201611191842.5A CN201611191842A CN108232385A CN 108232385 A CN108232385 A CN 108232385A CN 201611191842 A CN201611191842 A CN 201611191842A CN 108232385 A CN108232385 A CN 108232385A
- Authority
- CN
- China
- Prior art keywords
- fine tuning
- wave filter
- millimeter wave
- resonant cavity
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000010959 steel 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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of millimeter wave filter fine tuning structure, including resonant cavity；Chamber is finely tuned, positioned at resonance cavity edge, fine tuning chamber is connect with resonant cavity；And plural number adjustment screw, positioned at fine tuning chamber, plural number adjustment screw is inserted into fine tuning chamber, is adjusted by plural number adjustment screw with resonant cavity distance to adjust wave filter resonant frequency.
Description
Technical field
The present invention relates to a kind of millimeter wave filter fine tuning structure, more specifically, being a kind of resonance of high frequency filter
There is fine tuning structure, the resonant frequency of adjustable filter in chamber.
Background technology
Conventional filter structure is being processed with that in electroplating process, can lead to resonant cavity because of the machine table physical tolerances limit
Structure generates tolerance offset, thus actual resonance frequency is made to generate difference with analog result, this phenomenon is especially filtered in millimeter wave
In the resonant cavity of device significantly.It is smaller to make low-frequency resonance chamber its frequency departure abnormal phenomenon with current machining accuracy, so
And current machining accuracy is when making millimeter wave filter resonant cavity, it is easy to generate frequency departure and need to do over again repeatedly.Millimeter
Wave is the important frequency ranges of future market 5G, when there is resonant cavity tolerance and cause resonant frequency shift, generally requires to send processing back to
Again processing structure of resonant cavity is correct to correct resonant frequency again for factory, and is easier in the volume production stage because of procedure for processing shakiness
It is fixed, it causes product that need to do over again or scrap repeatedly, causes volume production yield low.
In view of the problems of prior art, the present invention provides a kind of millimeter wave filter fine tuning structure, can overcome because
The problem of causing resonant frequency shift for machine table tolerance can promote volume production yield.Millimeter wave is the important frequencies of future market 5G
Section, adjustable mechanism will be the following important methods for increasing first-pass yield and yield in millimeter wave filter.
Invention content
The present invention provides a kind of millimeter wave filter fine tuning structure, including resonant cavity；Finely tune chamber, positioned at resonance cavity edge,
Fine tuning chamber is connect with resonant cavity；Plural number adjustment screw, is set to fine tuning chamber, is adjusted by plural number adjustment screw and resonant cavity distance
To adjust wave filter resonant frequency.
Further, wherein the projected area of each adjustment screw is at least partially disposed at resonant cavity.
Further, wherein being located at the resonance cavity edge with more a resonance cavity wall, it can control those adjustment screws not deep
Enter among the resonant cavity.
Further, wherein the resonant cavity have more complex operator resonant cavity, those sub-resonance chambers extend the resonant cavity it
Both sides.
Further, wherein the projected area part of each adjustment screw is located at the sub-resonance chamber.
Further, wherein plural number adjustment screw is staggered in resonant cavity both sides.
Further, the center that equivalent negative capacitance cavity is located at resonant cavity top edge is further included, equivalent negative capacitance cavity is fixes
Structure.
Further, wherein the shape of plural number fine tuning chamber can be cylinder, square column, polygon column or irregular shape column.
Further, wherein the material of plural number adjustment screw is metal.
Further, wherein the surface of plural number adjustment screw is coated with metal.
Description of the drawings
Fig. 1-1 is the sectional view of millimeter wave filter fine tuning structure that an embodiment according to the present invention is painted；
Fig. 1-2 is the side view of millimeter wave filter fine tuning structure that an embodiment according to the present invention is painted；
Fig. 1-3 is the vertical view of millimeter wave filter fine tuning structure that an embodiment according to the present invention is painted；
Fig. 2-1 is the sectional view of millimeter wave filter fine tuning structure painted according to another embodiment of the present invention；
Fig. 2-2 is the side view of millimeter wave filter fine tuning structure painted according to another embodiment of the present invention；
Fig. 2-3 is the bottom view of millimeter wave filter fine tuning structure painted according to another embodiment of the present invention；
Fig. 2-4 is the vertical view of millimeter wave filter fine tuning structure painted according to another embodiment of the present invention；
Fig. 2-5 is frequency analog figure according to another embodiment of the present invention；
Fig. 2-6 is S parameter measured drawing according to another embodiment of the present invention.
Accompanying drawings symbol description
1st, 4 resonant cavity
11 lower housings
12 resonance cavity walls
2nd, 5 fine tuning chamber
21 upper shells
3rd, 6 plural number adjustment screw
41 sub-resonance chambers
42 sub-resonance cavity walls
43 lower housings
51 equivalent negative capacitance cavities
53 upper shells
A, B adjusts screw projected area
Specific embodiment：
In order to achieve the above objectives and effect, the technology used in the present invention means and its construction, hereby coordinate for embodiment and scheme
Formula, detailed description are as follows.
It please refers to Fig.1 shown in-1 to Fig. 1-3, for a kind of cuing open for millimeter wave filter fine tuning structure of present pre-ferred embodiments
Face figure, side view and vertical view.Millimeter wave filter fine tuning structure includes resonant cavity 1, fine tuning chamber 2 and plural number adjustment screw 3.
Wherein resonant cavity 1 is located in lower housing 11, and fine tuning chamber 2 is located in upper shell 21.Fine tuning chamber 2 is located at 1 edge of resonant cavity, finely tunes chamber
2 connect with resonant cavity 1.Fine tuning chamber 2 sets plural number adjustment screw 3.Fine tuning chamber 2 is provided with plural number adjustment screw 3, is adjusted by multiple
Number adjustment screw 3 adjusts wave filter resonant frequency with 1 distance of resonant cavity.The structure for finely tuning chamber 2 can be cylinder, square column, polygon
Shape column or irregular shape column.As Figure 1-1, the projected area part A of each adjustment screw 3 is located at resonant cavity 1, adjusts screw
3 edge can be limited to resonance cavity wall 12, and adjustment screw 3 is made not go deep among resonant cavity 4.When plural number adjustment screw 3 is being finely tuned
When chamber 2 is as fine tuning, effectively frequency can be allowed to adjust, and larger insertion is not caused to consume.When resonant cavity 1 because of machining tolerance
When causing resonant frequency shift, in 1 edge fine tuning structure of resonant cavity, processed without Zai Hui processing factories.High frequency filter due to
Resonant frequency is high, and subtle structure tolerance all easily causes frequency shift (FS), is easier to deviate especially among millimeter wave, uses plural number
Adjustment screw 3 is adjusted at 1 edge of resonance region, due to that farther out, when adjusting screw 3 and finely tuning, can allow production apart from resonant cavity 1
Personnel are easy to adjust out accurate frequency.The arrangement mode of wherein plural fine adjustment screw 3, using being staggered on the side of resonant cavity 1
Edge can reduce the area that fine tuning chamber 2 occupies resonant cavity 1, however arrangement mode is not limited system.Due to there is several adjustment screws
3 are distributed in the edge of resonant cavity 1, can adjust demand according to resonant frequency and adjust position respectively, can adjust easily because of structure tolerance or
It is the caused resonant frequency shift of damage, and process capability can be promoted.The material for adjusting screw 3 can be metal, such as stainless
Steel, copper, gold, silver, iron, titanium ... or its alloy.Or adjustment screw 3 is the screw for being coated with metallic film, metal material is for example not
Become rusty steel, copper, gold, silver, iron, titanium ... or its alloy.The cross-sectional shape for adjusting screw 3 can be round, rectangular or polygon.
It please refers to shown in Fig. 2-1 to Fig. 2-4, for a kind of millimeter wave filter fine tuning knot of another preferred embodiment of the present invention
Sectional view, side view, bottom view and the vertical view of structure.Millimeter wave filter fine tuning structure include upper shell 53, lower housing 43,
Resonant cavity 4, sub-resonance chamber 41, sub-resonance cavity wall 42, fine tuning chamber 5, equivalent negative capacitance cavity 51 and plural number adjustment screw 6.It is wherein common
The chamber 4 that shakes is located in lower housing 43, and fine tuning chamber 5 is located in upper shell 53, and upper shell 43 be combined with each other with lower housing 53.Sub-resonance chamber
41 extend in the both sides of resonant cavity 4, and fine tuning chamber 5 is located at the edge of sub-resonance chamber 41, and fine tuning chamber 5 is connect with sub-resonance chamber 4.Fine tuning
Chamber 5 is provided with plural number adjustment screw 6, is adjusted by plural number adjustment screw 6 with 5 distance of resonant cavity to adjust wave filter resonance frequency
Rate.The structure for finely tuning chamber 5 can be cylinder, square column, polygon column or irregular shape column.As shown in Fig. 2-1, each adjustment screw 6
Projected area part B be located at sub-resonance chamber 41, the edge of adjustment screw 6 can be limited to sub-resonance cavity wall 42, make adjustment screw 6
Do not go deep among sub-resonance chamber 4.Since sub-resonance chamber 41 extends in the both sides of resonant cavity 4, when plural number adjustment screw 6 is in fine tuning chamber
5 when finely tuning, and effectively frequency can be allowed to adjust, and larger insertion is not caused to consume.For example, such as Fig. 2-5 realistic simulation data
It is shown, by plural number adjustment screw 6 tripping in fine tuning chamber 5, to allow frequency toward high-frequency mobile.Centre frequency movement is by 72.022GHz
To72.24GHz is down to -0.835dB, only+0.004dB, nothing toward high-frequency mobile 218MHz, insertion loss value by -0.839dB
It causes significantly to consume and become.As shown in figures 2-6, the center of resonant cavity 4 is arranged on for fine tuning chamber 5, with being arranged on sub-resonance chamber 41
Figure is compared in the simulation of both sides, if 4 center of resonant cavity is put into adjustment screw 6, insertion loss will be made hurriedly to increase and can not used, and is placed in
The both sides of sub-resonance chamber 41, which are put into adjustment screw 6, will not then cause obvious loss, therefore structure of the present invention has substantial effective.Deng
It imitates negative electricity cavity volume 51 and is located at upper shell 53, the center of 4 top edge of resonant cavity, equivalent negative capacitance cavity 51 is connected with resonant cavity 51.
Since fine tuning 5 structure of chamber can cause to resonate toward the phenomenon that low frequency movement, it is therefore desirable to provide equivalent negative capacitance cavity 51 to adjust altogether
Vibration frequency.The planform of equivalent negative capacitance cavity 51 can be the groove structures such as cylinder, square column, polygon column or irregular shape column.
In volume production, when resonant cavity 4 because when machining tolerance causes resonant frequency shift, spiral shell is adjusted by plural number at 41 edge of sub-resonance chamber
6 fine tuning structures of silk, are processed, consume of reducing work hours without Zai Hui processing factories.High frequency filter is subtle due to resonant frequency height
Structure tolerance all easily causes frequency shift (FS), is easier to deviate especially among millimeter wave, using plural number adjustment screw 6 in sub-resonance
41 edge of chamber is adjusted, due to that farther out, when adjusting the fine tuning of screw 4, producers can be allowed to be easy to adjust apart from 4 center of resonant cavity
It is whole go out accurate frequency.The wherein arrangement mode of plural number fine tuning chamber 5, using being staggered at the edge of sub-resonance chamber 41, to answer milli
The less and less demand of metric wave wave filter resonant cavity 4, however arrangement mode is not limited system.Due to there is multiple adjustment screws 6
The edge of sub-resonance chamber 41 is distributed in, demand can be adjusted according to resonant frequency and adjust position respectively, can easily be adjusted because of structure tolerance
Or the resonant frequency shift caused by damage, and process capability can be promoted.The adjusting range for adjusting screw 6 is in fine tuning chamber 5
Among.The material for adjusting screw 6 can be metal, such as stainless steel, copper, gold, silver, iron, titanium ... or its alloy.Or adjustment screw
6 be the screw for being coated with metallic film, metal material such as stainless steel, copper, gold, silver, iron, titanium ... or its alloy.Adjust screw 6
Cross-sectional shape can be round, rectangular or polygon.
Although the present invention has been described by way of example and in terms of the preferred embodiments, however, it is not to limit the invention, any to be familiar with this skill
Skill person, without departing from the spirit and scope of the present invention, when can make it is a little change and retouch, therefore protection scope of the present invention work as
Subject to right institute defender.
Claims (10)
1. a kind of millimeter wave filter fine tuning structure, which is characterized in that including：
One resonant cavity；Plural number fine tuning chamber, positioned at the resonance cavity edge, those fine tuning chambers are connect with the resonant cavity；And plural number is adjusted
Whole screw is set to those fine tuning chambers, is adjusted by those adjustment screws with the resonant cavity distance to adjust wave filter resonance frequency
Rate.
2. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that the throwing of wherein each adjustment screw
Shadow area portions are located at the resonant cavity.
3. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that wherein with more a resonance cavity wall
Positioned at the resonance cavity edge, those adjustment screws can control not go deep among the resonant cavity.
4. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that wherein the resonant cavity is with more multiple
Number sub-resonance chamber, those sub-resonance chambers extend the both sides of the resonant cavity.
5. millimeter wave filter fine tuning structure according to claim 3, which is characterized in that the throwing of wherein each adjustment screw
Shadow area portions are located at the sub-resonance chamber.
6. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that wherein those fine tuning chamber staggered rows
It is listed in the resonant cavity both sides.
7. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that further include an equivalent negative capacitance chamber
Positioned at the center of the resonant cavity top edge, which is fixed structure.
8. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that the wherein shape of those fine tuning chambers
Can be cylinder, square column, polygon column or irregular shape column.
9. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that the wherein material of those adjustment screws
Matter is metal.
10. millimeter wave filter fine tuning structure according to claim 1, which is characterized in that wherein those adjust screws
Surface is coated with metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191842.5A CN108232385B (en) | 2016-12-21 | 2016-12-21 | Fine tuning structure of millimeter wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191842.5A CN108232385B (en) | 2016-12-21 | 2016-12-21 | Fine tuning structure of millimeter wave filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108232385A true CN108232385A (en) | 2018-06-29 |
| CN108232385B CN108232385B (en) | 2019-12-06 |
Family
ID=62651828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611191842.5A Expired - Fee Related CN108232385B (en) | 2016-12-21 | 2016-12-21 | Fine tuning structure of millimeter wave filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108232385B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070139135A1 (en) * | 2005-12-20 | 2007-06-21 | Xytrans, Inc. | Waveguide diplexer |
| CN202094256U (en) * | 2011-05-30 | 2011-12-28 | 南京东恒通信科技有限公司 | Small-size high power microwave filter |
| CN202167593U (en) * | 2011-04-22 | 2012-03-14 | 深圳市大富科技股份有限公司 | Cavity filter, communication device, communication device cover plate assembly and tuning structure |
| CN204991914U (en) * | 2015-09-01 | 2016-01-20 | 昇达科技股份有限公司 | Wave filter of adjustable frequency and duration |
| CN105846020A (en) * | 2016-05-05 | 2016-08-10 | 广东通宇通讯股份有限公司 | Filter and fly rod fastening structure thereof |
| CN106025468A (en) * | 2016-07-11 | 2016-10-12 | 苏州艾福电子通讯股份有限公司 | Ceramic cavity filter |
-
2016
- 2016-12-21 CN CN201611191842.5A patent/CN108232385B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070139135A1 (en) * | 2005-12-20 | 2007-06-21 | Xytrans, Inc. | Waveguide diplexer |
| CN202167593U (en) * | 2011-04-22 | 2012-03-14 | 深圳市大富科技股份有限公司 | Cavity filter, communication device, communication device cover plate assembly and tuning structure |
| CN202094256U (en) * | 2011-05-30 | 2011-12-28 | 南京东恒通信科技有限公司 | Small-size high power microwave filter |
| CN204991914U (en) * | 2015-09-01 | 2016-01-20 | 昇达科技股份有限公司 | Wave filter of adjustable frequency and duration |
| CN105846020A (en) * | 2016-05-05 | 2016-08-10 | 广东通宇通讯股份有限公司 | Filter and fly rod fastening structure thereof |
| CN106025468A (en) * | 2016-07-11 | 2016-10-12 | 苏州艾福电子通讯股份有限公司 | Ceramic cavity filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108232385B (en) | 2019-12-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |