CN110265754A - A kind of dielectric waveguide filter - Google Patents
A kind of dielectric waveguide filter Download PDFInfo
- Publication number
- CN110265754A CN110265754A CN201910640339.0A CN201910640339A CN110265754A CN 110265754 A CN110265754 A CN 110265754A CN 201910640339 A CN201910640339 A CN 201910640339A CN 110265754 A CN110265754 A CN 110265754A
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- Prior art keywords
- dielectric
- blind slot
- negative coupling
- slot
- waveguide filter
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- 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.)
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Links
- 230000008878 coupling Effects 0.000 claims abstract description 70
- 238000010168 coupling process Methods 0.000 claims abstract description 70
- 238000005859 coupling reaction Methods 0.000 claims abstract description 70
- 210000002706 plastid Anatomy 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver 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
- H01P1/2002—Dielectric waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
Abstract
The present invention relates to a kind of dielectric waveguide filter, including two adjacent resonators, each resonator includes dielectric and the shielded layer for being coated to the medium external surface, and each resonator is equipped with frequency blind hole, and the frequency blind hole internal surface is provided with shielded layer；Negative coupling blind slot is additionally provided between described two resonators, the negative coupling blind slot makes the coupling between described two resonators become capacitive coupling.The present invention realizes capacitive coupling by the negative coupling blind slot of setting, reduces the weight of filter.
Description
[technical field]
The present invention relates to a kind of communication equipment devices, more particularly, to a kind of dielectric waveguide filter.
[background technique]
Filter is a kind of frequency-selecting device, is commonly used in radio frequency system front end.Dielectric waveguide filter is compared to traditional wave
Waveguide filter has great advantages, therefore is with a wide range of applications in 5G communication equipment.Miniaturization, high-performance, low function
Consuming filter is communication equipment again, especially the key of 5G device miniaturization.
In order to improve the frequency selective characteristic of dielectric waveguide filter, cross-coupling is generallyd use, its phase phase difference is made
180 °, to form the pole outside frequency response passband.The capacitively coupled way of traditional realization is exactly to use zero cavity configuration, i.e.,
Increasing a resonance frequency in the medium single-chamber of high side of filter passband or low side, is forming that passband is high-end or the transmission of low side
Zero point.Such a process increases the volume of device and weight, the requirement with 5G to device is runed counter to.
[summary of the invention]
The object of the present invention is to realize the capacitive coupling of dielectric waveguide filter using another technical solution.
For this purpose, the present invention provides a kind of dielectric waveguide filter, including two adjacent resonators, each resonator includes
Dielectric and the shielded layer for being coated to the medium external surface, each resonator are equipped with frequency blind hole, in the frequency blind hole
Surface is provided with shielded layer；Negative coupling blind slot is additionally provided between described two resonators, the negative coupling blind slot makes described two
Coupling between resonator becomes capacitive coupling.
As a preferred embodiment, the depth of the negative coupling blind slot is greater than the 20% of the dielectric height
As a preferred embodiment, the height of the dielectric is at 3 millimeters to 20 millimeters.
As a preferred embodiment: the inner wall of the negative coupling blind slot, bottom are equipped with shielded layer；Or the negative coupling
One of the inner wall of blind slot, bottom are equipped with shielded layer；Or the inner wall of the negative coupling blind slot, bottom are not provided with shielding
Layer.
As a preferred embodiment: the negative coupling blind slot is located at a face of the dielectric；Or the negative coupling
Blind slot is located at opposite two face of the dielectric.
As a preferred embodiment: the negative coupling blind slot both ends are not communicated to the outer surface of the dielectric；Or
The negative coupling blind slot is only communicated to the outer surface of the dielectric at one end；Or the negative coupling blind slot is only connected at one end
To the through slot for being formed in the dielectric；Or to be respectively communicated with corresponding two frequencies blind at the both ends of the negative coupling blind slot
Hole.
As a preferred embodiment, the bottom of the negative coupling blind slot is equipped with connecting hole, and the diameter of the connecting hole is less than
Or the width equal to the negative coupling blind slot；The connecting hole is respectively communicated with another apparent surface of the dielectric, or
Person is communicated to the negative coupling blind slot of another apparent surface positioned at the dielectric.
As a preferred embodiment, the inner wall of the connecting hole is equipped with or is not provided with shielded layer.
As a preferred embodiment, the bottom of the negative coupling blind slot is concordant or not concordant.
As a preferred embodiment, through slot is additionally provided between described two resonators.
The present invention makes the coupling between described two resonators become capacitive coupling by the way that negative coupling blind slot is arranged, and reduces
The weight of filter.
[Detailed description of the invention]
Fig. 1 is the stereoscopic schematic diagram for the dielectric waveguide filter that first embodiment of the invention provides；
Fig. 2 is the floor map of filter shown in Fig. 1；
Fig. 3 is the partial sectional view of filter shown in Fig. 2；
Fig. 4 is a kind of alternative design of filter shown in Fig. 3；
Fig. 5 is the stereoscopic schematic diagram for the dielectric waveguide filter that second embodiment of the invention provides；
Fig. 6 is the floor map of filter shown in Fig. 5；
Fig. 7 is the partial sectional view of filter shown in Fig. 6；
Fig. 8 is a kind of alternative design of filter shown in Fig. 7；
Fig. 9 is the stereoscopic schematic diagram for the dielectric waveguide filter that third embodiment of the invention provides；
Figure 10 is the floor map of filter shown in Fig. 9；
Figure 11 is the partial sectional view of filter shown in Figure 10；
Figure 12 is a kind of alternative design of filter shown in Figure 11；
Figure 13 is the stereoscopic schematic diagram for the dielectric waveguide filter that fourth embodiment of the invention provides；
Figure 14 is the floor map of filter shown in Figure 13；
Figure 15 is the partial sectional view of filter shown in Figure 14；
Figure 16 is a kind of alternative design of filter shown in Figure 15；
Figure 17 is the stereoscopic schematic diagram for the dielectric waveguide filter that fifth embodiment of the invention provides；
Figure 18 is the floor map of filter shown in Figure 17；
Figure 19 is the partial sectional view of filter shown in Figure 18；
Figure 20 and Figure 21 is two kinds of alternative designs of filter shown in Figure 19；
Figure 22 is the stereoscopic schematic diagram for the dielectric waveguide filter that sixth embodiment of the invention provides；
Figure 23 is the floor map of filter shown in Figure 22；
Figure 24 is the partial sectional view of filter shown in Figure 23；
Figure 25 and Figure 26 is two kinds of alternative designs of filter shown in Figure 24；
Figure 27 is the stereoscopic schematic diagram for the dielectric waveguide filter that seventh embodiment of the invention provides；
Figure 28 is the floor map of filter shown in Figure 27；
Figure 29 is the partial sectional view of filter shown in Figure 28；
Figure 30 is a kind of alternative design of filter shown in Figure 29；
Figure 31 is the stereoscopic schematic diagram for the dielectric waveguide filter that eighth embodiment of the invention provides；
Figure 32 is the floor map of filter shown in Figure 31；
Figure 33 is the partial sectional view of filter shown in Figure 32；
Figure 34 is the stereoscopic schematic diagram for the dielectric waveguide filter that ninth embodiment of the invention provides；
Figure 35 is the floor map of filter shown in Figure 34；
Figure 36 is the partial sectional view of filter shown in Figure 35；
Figure 37 to 39 is three kinds of alternative designs of filter shown in Figure 36；
Figure 40 is the stereoscopic schematic diagram for the dielectric waveguide filter that tenth embodiment of the invention provides；
Figure 41 is the floor map of filter shown in Figure 40；
Figure 42 is the partial sectional view of filter shown in Figure 41；
Figure 43 to 45 is three kinds of alternative designs of filter shown in Figure 42；
Figure 46 is the stereoscopic schematic diagram for the dielectric waveguide filter that eleventh embodiment of the invention provides；
Figure 47 is the partial schematic plan view of filter shown in Figure 40；
Figure 48 is the partial sectional view of filter shown in Figure 47；
Figure 49 is the emulation schematic diagram of the filter of first embodiment of the invention.
[specific embodiment]
The invention will be further described with reference to the accompanying drawings and examples.
With reference to Fig. 1, in first embodiment of the invention, provided dielectric waveguide filter includes four resonators, this four
A resonator arranges in such a way that two rows two arrange.There is criss-cross through slot 15, the cross is logical among dielectric waveguide filter
Dielectric waveguide filter is divided into four regions by slot 15, and there is a resonator in each region.Understandably, if need logical
Whether slot 15 needs cross through slot 15 to need to go to determine as the case may be.
Each resonator includes dielectric 11 and the shielded layer 12 for being coated to medium external surface.Shielded layer 12 is gold or silver
Or copper etc..Each resonator is equipped with frequency blind hole 13, and 13 inner surface of frequency blind hole is provided with shielded layer.Between two resonators also
Equipped with negative coupling blind slot 21, negative coupling blind slot 21 can make the coupling between two resonators become capacitive coupling.In the present embodiment,
Negative coupling blind slot 21 is quadrangular shape, and the depth for bearing coupling blind slot 21 is greater than the 20% of the dielectric height, to make two humorous
Coupling between vibration device becomes capacitive coupling.The height of dielectric is at 3 millimeters to 20 millimeters.The simulated effect of the filter is as schemed
Shown in 48, Tu48Zhong, abscissa indicates frequency range, unit MHz, and ordinate indicates the size of S11 and S21 curve, unit dB.
Referring to figs. 2 and 3, the inner wall 23 of coupling blind slot 21 is born, bottom 25 is equipped with shielded layer.With reference to Fig. 4, alternatively,
It bottom 25 can not provided with shielding layer.
With reference to Fig. 5 to Fig. 7, in second embodiment of the invention, it is with the main difference of first embodiment, bears coupling blind slot
21 bottom is not generally flush with, but including deep bottom 26 and shallow bottom 27, under this kind of scheme, the depth for bearing coupling blind slot 21 is with deep bottom
Subject to 26.Inner wall 23, deep bottom 26 and shallow bottom 27 are covered with shielded layer.With reference to Fig. 8, alternatively, deep bottom 26 and shallow bottom 27 can be with
Only some is equipped with shielded layer, or not provided with shielding layer.
With reference to Fig. 9 to Figure 11, in third embodiment of the invention, it is with the main difference of second embodiment, it is blind bears coupling
The side of slot 21 is connected to through slot 15.With reference to Figure 11 and Figure 12, shielded layer can be all arranged in deep bottom 26 and shallow bottom 27, or only
Some is equipped with shielded layer, or not provided with shielding layer.
With reference to figures 13 to Figure 15, in fourth embodiment of the invention, it is with the main difference of 3rd embodiment, it is blind bears coupling
The side of slot 21 is connected to through slot 15, and the other side is connected to the outer surface of dielectric 11.With reference to Figure 15 and Figure 16, deep bottom 26 and shallow bottom
27 can all be arranged shielded layer, and perhaps only some is equipped with shielded layer or not provided with shielding layer.
With reference to Figure 17 to Figure 19, in fifth embodiment of the invention, it is with the main difference of first embodiment, it is blind bears coupling
The bottom surface and top surface of dielectric 11 is arranged in slot 21, that is, is respectively formed in two opposite surfaces of dielectric 11.This two negative
Coupling blind slot 21 can also be staggered with face.With reference to Figure 19, screen can be arranged in two bottoms of two negative coupling blind slots 21
Cover layer.Alternatively, with reference to Figure 20 and Figure 21, bottom 25 can not provided with shielding layer, or only in 25 provided with shielding layer of bottom.
With reference to Figure 22 to Figure 24, in sixth embodiment of the invention, it is with the main difference of the 5th embodiment, two opposite
The bottom 25 of negative coupling blind slot 21 be connected to by connecting hole 28.With reference to Figure 25, the bottom of the negative coupling blind slot 21 at top
25 can not provided with shielding layer；It is to be appreciated that Figure 25 is rotated 180 degree, be exactly the bottom 25 of negative coupling blind slot 21 of bottom not
Provided with shielding layer.With reference to Figure 26, the bottom 25 of the negative coupling blind slot 21 at top can be with provided with shielding layer, but connecting hole 28 is nearby not
Provided with shielding layer；It is to be appreciated that Figure 26 can also rotate 180 degree.
With reference to Figure 27 to Figure 29, in seventh embodiment of the invention, it is with the main difference of 3rd embodiment, deep bottom 25
Side wall far from 15 side of through slot is straight wall.It is similar with reference to Figure 29 and Figure 30, it, can be in inner wall 23, deep bottom 26 and shallow bottom 27
Shielded layer is flexibly set, or is not provided with shielded layer.
With reference to Figure 31 to Figure 33, in eighth embodiment of the invention, it is with the main difference of first embodiment, deep bottom 25
Side is communicated to through slot 15.
With reference to Figure 34 to Figure 36, in ninth embodiment of the invention, it is with the main difference of the 7th embodiment, deep bottom 25 is logical
Cross the bottom surface that a connecting hole 29 is communicated to dielectric 11.The diameter of connecting hole 29 can be equal to or less than negative coupling blind slot 21
Width.With reference to Figure 36, shielded layer can be all arranged in the bottom surface of deep bottom 26 and dielectric 11.Alternatively, with reference to Figure 37, deep bottom 26
And the bottom surface of dielectric 11 is in the region not provided with shielding layer close to connecting hole 29, or only one of wherein not provided with shielding layer, such as
Shown in Figure 38 and Figure 39.
With reference to Figure 40 to Figure 42, in tenth embodiment of the invention, it is with the main difference of the 9th embodiment, it is blind bears coupling
21 side of slot is communicated to cross through slot 15, and the other side is communicated to the outer surface of dielectric 11.It, can be flexible with reference to Figure 42 to 45
Shielded layer is arranged in ground.
With reference to Figure 46 to Figure 48, in eleventh embodiment of the invention, it is with the main difference of first embodiment, bears coupling
The span direction of blind slot 21 is respectively facing the frequency blind hole 13 of two resonators, and is connected to respectively with two frequency blind holes 13.
In the present embodiment, the bottom for bearing coupling blind slot 21 is not concordant, but there is deep bottom 26 and shallow bottom 27.
Above embodiments only express the preferred embodiment of the present invention, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, such as special to the difference in each embodiment
Sign is combined, and these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of dielectric waveguide filter, including two adjacent resonators, each resonator includes dielectric and is coated to institute
Give an account of the shielded layer of plastid outer surface, which is characterized in that each resonator is equipped with frequency blind hole, and the frequency blind hole internal surface is set
It is equipped with shielded layer；Negative coupling blind slot is additionally provided between described two resonators, the negative coupling blind slot makes described two resonators
Between coupling become capacitive coupling.
2. dielectric waveguide filter as described in claim 1, which is characterized in that the depth of the negative coupling blind slot is greater than described
The 20% of dielectric height.
3. dielectric waveguide filter as described in claim 1, which is characterized in that the height of the dielectric is at 3 millimeters to 20
Millimeter.
4. dielectric waveguide filter as described in claim 1, it is characterised in that:
The inner wall of the negative coupling blind slot, bottom are equipped with shielded layer；Or
One of the negative inner wall for coupling blind slot, bottom are equipped with shielded layer；Or
The inner wall of the negative coupling blind slot, bottom are not provided with shielded layer.
5. dielectric waveguide filter as described in claim 1, it is characterised in that:
The negative coupling blind slot is located at a face of the dielectric；Or
The negative coupling blind slot is located at opposite two face of the dielectric.
6. dielectric waveguide filter as described in claim 1, it is characterised in that:
The negative coupling blind slot both ends are not communicated to the outer surface of the dielectric；Or
The negative coupling blind slot is only communicated to the outer surface of the dielectric at one end；Or
The negative coupling blind slot is only communicated to the through slot for being formed in the dielectric at one end；Or
The both ends of the negative coupling blind slot are respectively communicated with corresponding two frequency blind holes.
7. dielectric waveguide filter as described in claim 1, which is characterized in that the bottom of the negative coupling blind slot is equipped with connection
Hole, the diameter of the connecting hole are less than or equal to the width of the negative coupling blind slot；The connecting hole is respectively communicated with to being given an account of
Another apparent surface of plastid, or it is communicated to the negative coupling blind slot of another apparent surface positioned at the dielectric.
8. dielectric waveguide filter as claimed in claim 7, which is characterized in that the inner wall of the connecting hole is equipped with or does not set
There is shielded layer.
9. dielectric waveguide filter as described in claim 1, which is characterized in that the bottom of the negative coupling blind slot it is concordant or
It is not concordant.
10. dielectric waveguide filter as described in claim 1, which is characterized in that be additionally provided between described two resonators logical
Slot.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640339.0A CN110265754A (en) | 2019-07-16 | 2019-07-16 | A kind of dielectric waveguide filter |
| PCT/CN2019/115071 WO2021008006A1 (en) | 2019-07-16 | 2019-11-01 | Dielectric waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640339.0A CN110265754A (en) | 2019-07-16 | 2019-07-16 | A kind of dielectric waveguide filter |
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| Publication Number | Publication Date |
|---|---|
| CN110265754A true CN110265754A (en) | 2019-09-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910640339.0A Pending CN110265754A (en) | 2019-07-16 | 2019-07-16 | A kind of dielectric waveguide filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110265754A (en) |
| WO (1) | WO2021008006A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403866A (en) * | 2020-04-14 | 2020-07-10 | 广东国华新材料科技股份有限公司 | Dielectric waveguide filter and novel capacitive coupling structure |
| CN112002973A (en) * | 2020-08-24 | 2020-11-27 | 石家庄市鹿泉区麦特思电子科技有限公司 | Microwave dielectric waveguide filter |
| CN112038735A (en) * | 2020-08-04 | 2020-12-04 | 华中科技大学 | Ceramic filter with double-blind-groove capacitive coupling structure |
| CN112072240A (en) * | 2020-08-28 | 2020-12-11 | 潮州三环（集团）股份有限公司 | Dielectric waveguide filter and manufacturing method thereof |
| CN112086719A (en) * | 2020-09-16 | 2020-12-15 | 石家庄市鹿泉区麦特思电子科技有限公司 | Microwave dielectric waveguide filter with six-order and four-transmission zero |
| WO2021008006A1 (en) * | 2019-07-16 | 2021-01-21 | 深圳国人科技股份有限公司 | Dielectric waveguide filter |
| WO2021012447A1 (en) * | 2019-07-19 | 2021-01-28 | 深圳国人科技股份有限公司 | Dielectric waveguide filter |
| CN112768858A (en) * | 2020-12-30 | 2021-05-07 | 江苏江佳电子股份有限公司 | Dielectric waveguide resonator and combiner comprising same |
| CN112768856A (en) * | 2020-12-03 | 2021-05-07 | 宜宾红星电子有限公司 | Dielectric waveguide filter |
| CN113300061A (en) * | 2020-02-24 | 2021-08-24 | 昇达科技股份有限公司 | Negative coupling structure applied to dielectric waveguide filter |
| KR20210126340A (en) * | 2020-04-10 | 2021-10-20 | 주식회사 아이.티.에프 | Waveguide filter with asymmetrical coupling |
| KR20230036198A (en) * | 2021-09-07 | 2023-03-14 | 한국전자기술연구원 | Ceramic waveguide filter for harmonic resonance mode suppression |
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| KR20210126340A (en) * | 2020-04-10 | 2021-10-20 | 주식회사 아이.티.에프 | Waveguide filter with asymmetrical coupling |
| KR102333921B1 (en) | 2020-04-10 | 2021-12-03 | 주식회사 아이.티.에프 | Waveguide filter with asymmetrical coupling |
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| CN112038735A (en) * | 2020-08-04 | 2020-12-04 | 华中科技大学 | Ceramic filter with double-blind-groove capacitive coupling structure |
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| CN112086719A (en) * | 2020-09-16 | 2020-12-15 | 石家庄市鹿泉区麦特思电子科技有限公司 | Microwave dielectric waveguide filter with six-order and four-transmission zero |
| CN112768856A (en) * | 2020-12-03 | 2021-05-07 | 宜宾红星电子有限公司 | Dielectric waveguide filter |
| CN112768858B (en) * | 2020-12-30 | 2021-10-15 | 江苏江佳电子股份有限公司 | Dielectric waveguide resonator and combiner comprising same |
| CN112768858A (en) * | 2020-12-30 | 2021-05-07 | 江苏江佳电子股份有限公司 | Dielectric waveguide resonator and combiner comprising same |
| KR20230036198A (en) * | 2021-09-07 | 2023-03-14 | 한국전자기술연구원 | Ceramic waveguide filter for harmonic resonance mode suppression |
| KR102604231B1 (en) | 2021-09-07 | 2023-11-20 | 한국전자기술연구원 | Ceramic waveguide filter for harmonic resonance mode suppression |
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| WO2021008006A1 (en) | 2021-01-21 |
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