CN110416669A - Dielectric filter, signal receiving/transmission device and base station - Google Patents
Dielectric filter, signal receiving/transmission device and base station Download PDFInfo
- Publication number
- CN110416669A CN110416669A CN201910769514.6A CN201910769514A CN110416669A CN 110416669 A CN110416669 A CN 110416669A CN 201910769514 A CN201910769514 A CN 201910769514A CN 110416669 A CN110416669 A CN 110416669A
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- groove
- dielectric filter
- medium block
- isolation strip
- metal layer
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 abstract description 21
- 238000010168 coupling process Methods 0.000 abstract description 21
- 238000005859 coupling reaction Methods 0.000 abstract description 21
- 238000012545 processing Methods 0.000 abstract description 7
- 238000010923 batch production Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010295 mobile communication Methods 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
- 238000009738 saturating Methods 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
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of dielectric filter, signal receiving/transmission device and base stations.Above-mentioned dielectric filter includes medium block, covers metal layer and resonator in medium block surface.Two adjacent resonators pass through between groove realize coupling.Moreover, because the metal layer of recess edge forms isolation strip by hollow out, therefore metal layer is divided into two parts being isolated and forms capacitance structure, to realize the capacitive coupling between two neighboring resonator.Moreover, can also realize and adjust to coupling amount by the size of the width and groove that adjust isolation strip.Compared with the working depth of control blind hole, the width of isolation strip is easier to control, and the consistency of batch production is good.Therefore, the difficulty of processing of above-mentioned dielectric filter is lower.
Description
Technical field
The present invention relates to mobile communication technology field, in particular to a kind of dielectric filter, signal receiving/transmission device and base station.
Background technique
Filter is a kind of frequency-selecting device, is the indispensable a part of communication equipment.As the high speed of communication system is sent out
Exhibition enters the 5G epoch, and the miniaturization of device is the key that the development of its communication equipment, and is minimized, high-performance, low-power consumption filtering
Device is the key that 5G device miniaturization again, and dielectric waveguide filter has the characteristics that all of 5G device miniaturization simultaneously, therefore
It is with a wide range of applications in 5G communication equipment.
In Design of Bandpass, usually require in the high-end property for realizing filter with low side design zero point of passband
It can require, low and middle-end zero point needs to generate by capacitive coupling.Currently, dielectric waveguide filter realizes capacity coupled one
Kind mode is: blind hole is dug on dielectric filter, the depth by controlling blind hole realizes capacitive coupling on dielectric filter.
Although this mode can be realized capacitive coupling.But it is very high to the deep-controlled requirement of blind hole.Especially for small
The precision controlling of type device, blind hole machining is highly difficult, and batch consistency is bad, and difficulty of processing is larger, in the following high frequency small
Change and is difficult to apply in device.
Summary of the invention
Based on this, it is necessary to provide a kind of lower dielectric filter of difficulty of processing.
A kind of dielectric filter, comprising:
Medium block has multiple resonant cavities, is provided with resonator in each resonant cavity；And
Metal layer is coated on the outer surface of the medium block；
Wherein, the medium block is formed fluted between two adjacent resonators, along the edge of the groove
Isolation strip is formed with, and the metal layer of the isolation strip region is by hollow out, to expose the medium block.
In implementing at wherein one, the groove is formed in the wherein side of the medium block.
In implementing at wherein one, the opposite two sides of the medium block are each formed with the groove.
In implementing at wherein one, one end of the groove extends to a surface of the medium block.
In implementing at wherein one, the both ends of the groove extend respectively to two opposite surfaces of the medium block.
In implementing at wherein one, the groove is rectangular channel.
In implementing at wherein one, the inside edge of the isolation strip and outer edge are to be arranged in parallel and at interval straight line.
In implementing at wherein one, the isolation strip is formed in outside the inner wall of the groove and/or the region of the groove.
Above-mentioned dielectric filter, two adjacent resonators pass through between groove realize coupling.Moreover, because groove side
The metal layer of edge forms isolation strip by hollow out, therefore metal layer is divided into two parts being isolated and forms capacitance structure, thus
Realize the capacitive coupling between two neighboring resonator.Moreover, may be used also by the size of the width and groove that adjust isolation strip
Coupling amount is realized and is adjusted.Compared with the working depth of control blind hole, the width of isolation strip is easier to control, and the one of batch production
Cause property is good.Therefore, the difficulty of processing of above-mentioned dielectric filter is lower.
The present invention also provides a kind of signal receiving/transmission devices, including dielectric filter described in any one of preferred embodiment as above
Device.
The present invention also provides a kind of base stations, including the signal receiving/transmission device as described in above preferred embodiment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of matter filter in one embodiment of the invention；
Fig. 2 is the cross-sectional view of matter filter shown in Fig. 1；
Fig. 3 is the top view of matter filter shown in Fig. 1；
Fig. 4 is the structural schematic diagram of matter filter in another embodiment of the present invention；
Fig. 5 is the structural schematic diagram of matter filter in another embodiment of the present invention；
Fig. 6 is the structural schematic diagram of matter filter in another embodiment of the present invention；
Fig. 7 is the structural schematic diagram of matter filter in another embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Fig. 1, the present invention provides a kind of base station, signal receiving/transmission device, filters 100.Wherein, base station is for electricity
Processing, transmitting and the reception of magnetostatic wave signal, to realize wireless communication.Base station includes above-mentioned signal receiving/transmission device, to realize electromagnetism
The transmitting-receiving of wave signal.And above-mentioned signal receiving/transmission device includes dielectric filter 100.In addition, signal receiving/transmission device generally further includes
Circuit structure, switch, dual-mode antenna etc..
Please refer to figs. 2 and 3 together, and the dielectric filter 100 in one embodiment of the invention includes medium block 110, gold
Belong to layer 120 and resonator 130.
Medium block 110 generally can be rectangular by dielectric materials die cast, shapes such as the higher ceramics of dielectric constant
The shapes such as the bodily form.Specifically, medium block 110 shown in attached drawing is in cube shaped, including upper surface, lower surface and connection upper surface with
The side of lower surface.Metal layer 120 is coated on the outer surface of medium block 110.Metal layer 120 plays electromagnetic shielding as electric wall
Effect.Other than the region particularly pointed out, the entire outer surface of medium block 110 is covered with metal layer 120.
Medium block 110 has multiple resonant cavity (not shown), is provided with resonator 130 in each resonant cavity.Multiple resonance
Device 130 is arranged successively, and constitutes filter circuit.Moreover, can be appearance between two adjacent resonators 130 according to filtering demands
Property coupling, can also be inductive coupled.It should be pointed out that attached drawing 1 to 6 illustrates only in dielectric filter 100, need to realize appearance
Property coupling two resonators 130 part.
Wherein, medium block 110 forms fluted 101 between two adjacent resonators 130.Moreover, groove 101 is interior
Wall is also covered with metal layer 120.Further, isolation strip 102, and 102 location of isolation strip are formed with along the edge of groove 101
The metal layer 120 in domain is by hollow out, to expose medium block 110.
That is, 102 region of isolation strip is not covered with metal layer 120.Moreover, along the setting of 101 edge of groove
Isolation strip 102 is closed cyclic structure.Therefore, isolation strip 102 metal layer 120 can be located at the part in groove 101 with
And the part that metal layer 120 is located at outside groove 101 keeps apart.
Two adjacent resonators 130 pass through between groove 101 can realize coupling.Moreover, metal layer 120 is isolated band
102 two parts kept apart can form capacitance structure, to realize the capacitive coupling between two neighboring resonator 130.Into
One step, by adjusting the width of isolation strip 102 and the size of groove 101, coupling amount can also be realized and be adjusted.
Specifically, the width of isolation strip 102 is W1 as shown in the figure, the size of groove 101 includes the width W2 of groove 101
And depth H.Compared with the working depth of Traditional control blind hole, the width of isolation strip 102 is easier to control, batch production it is consistent
Property is good, therefore dielectric filter 100 is easier to process.
It should be pointed out that there may be multiple groups capacitively coupled resonators two-by-two in the same dielectric filter 100
130, realize that coupled modes are same as described above, therefore details are not described herein.
There are a variety of possibility for position of the groove 101 on medium block 110, only need to need to realize positioned at two capacitively coupled
Between resonator 130.As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 7, in one embodiment, groove 101 is formed in medium block
110 wherein side.At this point, dielectric filter 100 also has simpler structure while meeting coupling demand.
As shown in fig. 6, in another embodiment, the opposite two sides of medium block 110 are each formed with groove 101.At this point, phase
Coupling amount between adjacent two resonators 130 is bigger.
Further, groove 101 can pass through entire medium block 110, can also only extend in the part of medium block 110.Such as
Shown in Fig. 7, in one embodiment, one end of groove 101 extends to a surface of medium block 110.
Specifically, one end of groove 101 may extend to the upper surface of medium block 110 or lower surface and form opening, groove
101 be groove-like structure open at one end.
As shown in Figures 1 to 6, in another embodiment, it is opposite to extend respectively to medium block 110 for the both ends of groove 101
Two surfaces.At this point, groove 101 run through medium block 110, the both ends of groove 101 respectively the upper surface of medium block 110 and under
Surface forms opening, and groove 101 is the groove-like structure of both ends open.
In addition, the shape of groove 101 can also be it is a variety of.In one embodiment, groove 101 is rectangular channel.Therefore, recessed
Each position on 101 extending direction of slot, the distance between two opposite inner walls of groove 101 are identical.In this way, being more advantageous to two
The stability that a resonator 130 couples.Moreover, being directed to the different demands of filtering parameter, also facilitate the width by changing groove 101
Degree and depth, which realize coupling amount, to be adjusted.
In one embodiment, the inside edge of isolation strip 102 and outer edge are to be arranged in parallel and at interval straight line.
Specifically, isolation strip 102 has, two opposite and parallel edge, inside edge refer to isolation strip 102 close to recessed
The a line at 101 edge of slot, outer edge are then opposite another a line.That is, isolation strip 102 is shape of rectangular ribbon structure.
Each position on 102 extending direction of isolation strip, inside edge are identical at a distance from outer edge.In this way, isolation strip 102 is by metal
After layer 120 separates, it is more preferable to be formed by capacitance structure symmetry.Moreover, being directed to different demands, also it is more convenient by adjusting isolation
Coupling amount is adjusted in width with 102.
It is appreciated that the effect of isolation strip 102 is that metal layer 120 is divided into two parts separately.For every
Shape from band 102 can have no effect on realization major function there are many form.
In one embodiment, isolation strip 102 is formed in outside the inner wall of groove 101 and/or the region of groove 101.
102 position of isolation strip is unlimited, as long as metal layer 120 can be divided into the part at two intervals.By to not
Metal layer 120 with region carries out hollow processing, can obtain positioned at the isolation strip 102 of different location.
As shown in Figure 1, the partial metal layers 120 of 110 upper surface of medium block, lower surface and side are by hollow out, to obtain
Isolation strip 102.As shown in figure 4, the partial metal layers 120 of 101 inner wall of 110 upper surface of medium block, lower surface and groove are by hollow out,
To obtain isolation strip 102.As shown in figure 5, the part gold of 110 upper surface of medium block, 101 inner wall of lower surface, side and groove
Belong to layer 120 by hollow out, to obtain isolation strip 102.
Above-mentioned dielectric filter 100, two adjacent resonators 130 pass through between groove 101 realize coupling.Moreover,
Since the metal layer 120 at 101 edge of groove forms isolation strip 102 by hollow out, therefore metal layer 120 is divided into two portions being isolated
Divide and formed capacitance structure, to realize the capacitive coupling between two neighboring resonator 130.Moreover, by adjusting isolation strip
102 width and the size of groove 101 can also realize coupling amount and adjust.Compared with the working depth of control blind hole, isolation
Width with 102 is easier to control, and the consistency of batch production is good.Therefore, the difficulty of processing of above-mentioned dielectric filter 100 compared with
It is low.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of dielectric filter characterized by comprising
Medium block has multiple resonant cavities, is provided with resonator in each resonant cavity；And
Metal layer is coated on the outer surface of the medium block；
Wherein, the medium block is formed fluted between two adjacent resonators, and the edge along the groove is formed
There is an isolation strip, and the metal layer of the isolation strip region is by hollow out, to expose the medium block.
2. dielectric filter according to claim 1, which is characterized in that the groove is formed in the medium block wherein
Side.
3. dielectric filter according to claim 1, which is characterized in that the opposite two sides of the medium block are respectively formed
State groove.
4. dielectric filter according to claim 1, which is characterized in that one end of the groove extends to the medium block
A surface.
5. dielectric filter according to claim 1, which is characterized in that the both ends of the groove extend respectively to be given an account of
Two opposite surfaces of mass.
6. dielectric filter according to claim 1, which is characterized in that the groove is rectangular channel.
7. dielectric filter according to claim 1, which is characterized in that the inside edge of the isolation strip and outer edge are flat
Capable and spaced straight line.
8. dielectric filter according to any one of claims 1 to 7, which is characterized in that the isolation strip is formed in described
Outside the region of the inner wall of groove and/or the groove.
9. a kind of signal receiving/transmission device, which is characterized in that including the described in any item dielectric filters of such as the claims 1 to 8
Device.
10. a kind of base station, which is characterized in that including such as above-mentioned signal receiving/transmission device as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769514.6A CN110416669B (en) | 2019-08-20 | 2019-08-20 | Dielectric filter, signal transceiver and base station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769514.6A CN110416669B (en) | 2019-08-20 | 2019-08-20 | Dielectric filter, signal transceiver and base station |
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| Publication Number | Publication Date |
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| CN110416669A true CN110416669A (en) | 2019-11-05 |
| CN110416669B CN110416669B (en) | 2024-06-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403858A (en) * | 2020-03-18 | 2020-07-10 | 无锡惠虹电子有限公司 | Zero point implementation structure of ceramic waveguide band-pass filter |
| WO2021135904A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter, radio transceiver device having same, and base station |
| WO2021169220A1 (en) * | 2020-02-24 | 2021-09-02 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio receiving and transmitting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260301A (en) * | 1988-08-26 | 1990-02-28 | Toko Inc | Dielectric filter and method for adjusting its coupling degree |
| WO2018096731A1 (en) * | 2016-11-22 | 2018-05-31 | 株式会社村田製作所 | Dielectric waveguide filter, high-frequency front-end circuit, communication device, massive mimo system, and adjustment method for dielectric waveguide filter |
| CN210182542U (en) * | 2019-08-20 | 2020-03-24 | 京信通信技术(广州)有限公司 | Dielectric filter, signal transmitting/receiving device and base station |
-
2019
- 2019-08-20 CN CN201910769514.6A patent/CN110416669B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260301A (en) * | 1988-08-26 | 1990-02-28 | Toko Inc | Dielectric filter and method for adjusting its coupling degree |
| WO2018096731A1 (en) * | 2016-11-22 | 2018-05-31 | 株式会社村田製作所 | Dielectric waveguide filter, high-frequency front-end circuit, communication device, massive mimo system, and adjustment method for dielectric waveguide filter |
| CN210182542U (en) * | 2019-08-20 | 2020-03-24 | 京信通信技术(广州)有限公司 | Dielectric filter, signal transmitting/receiving device and base station |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135904A1 (en) * | 2019-12-31 | 2021-07-08 | 江苏灿勤科技股份有限公司 | Dielectric filter, radio transceiver device having same, and base station |
| WO2021169220A1 (en) * | 2020-02-24 | 2021-09-02 | 江苏灿勤科技股份有限公司 | Dielectric filter and radio receiving and transmitting device |
| CN111403858A (en) * | 2020-03-18 | 2020-07-10 | 无锡惠虹电子有限公司 | Zero point implementation structure of ceramic waveguide band-pass filter |
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| Publication number | Publication date |
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| CN110416669B (en) | 2024-06-25 |
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