CN111430859A - Dielectric filter and communication base station - Google Patents
Dielectric filter and communication base station Download PDFInfo
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- CN111430859A CN111430859A CN202010215656.0A CN202010215656A CN111430859A CN 111430859 A CN111430859 A CN 111430859A CN 202010215656 A CN202010215656 A CN 202010215656A CN 111430859 A CN111430859 A CN 111430859A
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- Prior art keywords
- dielectric filter
- signal
- hole
- base station
- communication base
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- 238000004891 communication Methods 0.000 title claims abstract description 26
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 8
- 238000009795 derivation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/035—Cooling of active equipments, e.g. air ducts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to the technical field of communication, in particular to a dielectric filter and a communication base station, wherein the dielectric filter comprises a body, the body is provided with a front side suitable for facing an antenna structure and a back side away from the antenna structure, and a plurality of resonant cavities are arranged on the front side and the back side. The front and the back of the body are provided with the resonant cavities, the dielectric filter can be installed with the front side upward and the back side upward, the filtering function can be realized, the front side and the back side do not need to be distinguished during installation, and the installation is facilitated.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a dielectric filter and a communication base station.
Background
The dielectric filter is a microwave filter which adopts a dielectric resonant cavity to obtain the frequency-selecting function through multi-stage coupling. After the 21 st century, dielectric filters gradually moved from laboratories to production lines through long-term accumulation in theory and practice. Dielectric filters have been widely used in systems such as mobile communications and microwave communications because of their advantages such as miniaturization, low loss, and good temperature characteristics. The filter has the characteristics of small insertion loss, good power resistance and narrow bandwidth, and is particularly suitable for the cascade coupling filtering of CT1, CT2, 900MHz, 1.8GHz, 2.4GHz and 5.8GHz, portable telephones, automobile telephones, wireless earphones, wireless microphones, radio stations, cordless telephones, integrated transceiving duplexers and the like.
In the filter in the prior art, usually, only a resonant cavity is arranged on a single side, signals can be transmitted only in a single direction, the signals enter from one side and exit from the other side, when the filter is installed, once the filter is installed in error, the filter is installed reversely, a normal filtering function cannot be realized, and if the filter is found to be installed reversely in the use process, a communication base station needs to be disassembled, and the filter can be installed again.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the filter signal in the prior art can only be transmitted in one direction and is not easy to install, thereby providing a dielectric filter and a communication base station which are easy to install.
In order to solve the technical problem, the dielectric filter provided by the invention comprises a body, wherein the body is provided with a front surface suitable for facing an antenna structure and a back surface deviating from the antenna structure, and a plurality of resonant cavities are arranged on the front surface and the back surface.
The body is provided with a coating, one side of the body is provided with a signal leading-in hole for leading in a signal, and the other side of the body is provided with a signal leading-out hole for leading out the signal.
And a coating is arranged in the signal leading-in hole and/or the signal leading-out hole.
The signal blocking structure is a groove arranged at the outer edge of the signal leading-in hole and/or the signal leading-out hole.
The signal blocking structure is not provided with a coating.
The groove is a circular groove along the opening edge of the signal leading-in hole and/or the signal leading-out hole.
The resonant cavity disposed on the front face is symmetrically disposed with the resonant cavity disposed on the back face.
The shell is suitable for containing the body and clamped with the body.
The invention also provides a communication base station comprising the dielectric filter.
The communication base station further comprises an arc-shaped metal antenna.
The communication base station further comprises a heat dissipation structure, and the plurality of dielectric filters are arranged on the heat dissipation structure and are arranged in an arch shape.
The technical scheme of the invention has the following advantages:
1. according to the dielectric filter provided by the invention, the front side and the back side of the body are respectively provided with the plurality of resonant cavities, the dielectric filter can be installed with the front side upwards and the back side upwards, the filtering function can be realized, the front side and the back side do not need to be distinguished during installation, and the installation is facilitated.
2. According to the dielectric filter provided by the invention, the signal leading-in hole and/or the signal leading-out hole are/is internally provided with the coating, so that the signal can be reflected in the signal leading-in hole and/or the signal leading-out hole, and the filtering effect of the dielectric filter can be improved.
3. The dielectric filter further comprises a signal blocking structure, wherein the signal blocking structure is a groove arranged at the outer edge of the signal leading-in hole and/or the signal leading-out hole, and the signal blocking structure is used for blocking signals from being reflected out of the signal leading-in hole and/or the signal leading-out hole.
4. According to the dielectric filter provided by the invention, the signal blocking structure is not provided with a coating, so that signals can be further ensured not to be reflected out from the signal leading-in hole and/or the signal leading-out hole.
5. According to the dielectric filter provided by the invention, the resonant cavity arranged on the front surface and the resonant cavity arranged on the back surface are symmetrically arranged, so that the front surface and the back surface can not be distinguished when the dielectric filter is installed, and the dielectric filter is convenient to install and use.
6. The dielectric filter further comprises a shell, the shell is suitable for containing the body, the shell is clamped with the body, the shell is convenient to fix the dielectric filter, and the shell and the body are connected simply and stably.
7. The communication base station provided by the invention comprises the dielectric filter, and the dielectric filter of the communication base station can be installed with the front side upward and also can be installed with the back side upward, so that the field assembly of the communication base station is facilitated.
8. The communication base station further comprises the arc-shaped metal antenna, the arc-shaped metal antenna can receive divergent signals at different angles, and the signals are stronger.
9. The communication base station further comprises a heat dissipation structure, the plurality of dielectric filters are arranged on the heat dissipation structure and are arranged in an arch shape, and the arrangement mode of the filters can be matched with the arc-shaped antenna.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a dielectric filter provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of the front surface of the body of the dielectric filter shown in fig. 1;
fig. 3 is a schematic structural view of the back surface of the body of the dielectric filter shown in fig. 1;
fig. 4 is a schematic structural diagram of a communication base station provided in an embodiment of the present invention;
description of reference numerals:
1-body; 2-a resonant cavity; 3-a groove; 4-a shell; 5-antenna.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The applicant develops an arc-shaped antenna structure which can receive divergent signals at different angles, and the signals are stronger.
As shown in fig. 1 to 3, the dielectric filter includes a body 1, the body 1 has a front surface adapted to face the antenna structure and a back surface facing away from the antenna structure, and the front surface and the back surface are provided with a plurality of resonant cavities 2. Through all setting up a plurality of resonant cavities 2 at the front and the back of body 1, this dielectric filter can openly install up, also can install the back up, and the homoenergetic realizes filtering function, need not distinguish the positive and negative when the installation, is favorable to the installation. The specific structure of the resonant cavity 2 is well known to those skilled in the art and will not be described in detail in this embodiment.
The body 1 is provided with a coating, so that signals can be reflected and refracted in the body 1, and the filtering effect of the dielectric filter is ensured.
One side of body 1 is equipped with the signal inlet hole that supplies the signal to get into, the opposite side is equipped with the signal derivation hole that supplies the signal derivation, the signal inlet hole is used for leading into body 1 with the signal that antenna 5 received, and filter through resonant cavity 2, the signal derivation hole is used for leading out the signal after the filtration, when in actual use, the signal inlet hole links to each other with three antenna array, the signal outlet hole is connected with the connecting piece that can lead the signal, the connecting piece links to each other with the PCB board, the connecting piece can be with on the signal conduction PCB board after the filtration. Specifically, a signal introducing hole is provided on the front surface of the main body 1, and a signal leading-out hole is provided on the back surface, but of course, the signal introducing hole can also lead out a signal, and the signal leading-out hole can also lead in a signal, so that the front surface and the back surface are not required to be distinguished in installation.
In this embodiment, the signal introducing hole is a circular hole, and the signal leading-out hole is a kidney-shaped hole. Of course, in other alternative embodiments, the shapes of the signal introduction hole and the signal exit hole are not limited.
In a preferred embodiment, the signal leading-in hole and the signal leading-out hole are both provided with coatings, so that the signal can be reflected in the signal leading-in hole and the signal leading-out hole, and the filtering effect of the dielectric filter can be improved. Of course, in other alternative embodiments, the plating is provided only in the signal lead-in hole or the signal lead-out hole, or neither the signal lead-in hole nor the signal lead-out hole.
The dielectric filter further comprises a signal blocking structure, in this embodiment, the signal blocking structure is a groove 3 formed at the outer edge of the signal leading-in hole and the signal leading-out hole. The signal blocking structure is used for blocking signals from reflecting out of the signal leading-in hole or the signal leading-out hole. In other alternative embodiments, the recess 3 may be provided only at the outer edge of the signal introduction hole or the signal lead-out hole.
Specifically, the groove 3 is a circular groove along the opening edges of the signal leading-in hole and the signal leading-out hole.
The specific shape of the groove 3 can be adjusted according to the shapes of the signal leading-in hole and the signal leading-out hole, the signal leading-in hole in the embodiment is circular, and correspondingly, the groove 3 is circular. In other alternative embodiments, when the shape of the signal introducing hole or the signal leading-out hole is other shapes, such as a polygon, an ellipse, etc., the shape of the groove 3 may also be a polygon, an ellipse, etc.
In the present embodiment, the resonator 2 disposed on the front surface is disposed symmetrically to the resonator 2 disposed on the rear surface. The front side and the back side can not be distinguished when the dielectric filter is installed, and the installation and the use are convenient.
The dielectric filter further comprises a shell 4, the shell 4 is suitable for accommodating the body 1, and the shell 4 is clamped with the body 1. The setting of casing 4 is convenient for fix this dielectric filter, and is concrete, and casing 4 passes through concave-convex structure cooperation joint with body 1.
The present embodiment also provides a communication base station, as shown in fig. 4, including the dielectric filter. The dielectric filter of the communication base station can be installed with the front side upward and can also be installed with the back side upward, and field assembly of the communication base station is facilitated.
The communication base station further comprises a metal antenna 5 in the shape of an arc. The arc-shaped metal antenna 5 can receive divergent signals of different angles, and the signals are stronger.
This communication base station still includes heat radiation structure, and a plurality of dielectric filter set up on heat radiation structure, side by side the distribution be the arch, and this kind of setting mode of wave filter can the curved antenna 5 of adaptation.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (11)
1. A dielectric filter is characterized by comprising a body (1), wherein the body (1) is provided with a front surface suitable for facing an antenna structure and a back surface deviating from the antenna structure, and a plurality of resonant cavities (2) are arranged on the front surface and the back surface.
2. A dielectric filter according to claim 1, characterized in that the body (1) is provided with a coating, and that one side of the body (1) is provided with a signal lead-in hole for signal entrance and the other side is provided with a signal lead-out hole for signal lead-out.
3. A dielectric filter according to claim 2, wherein the signal lead-in hole and/or the signal lead-out hole is provided with a plating layer.
4. A dielectric filter according to claim 2 or 3, further comprising a signal blocking structure, the signal blocking structure being a groove (3) provided at an outer edge of the signal lead-in hole and/or the signal lead-out hole.
5. A dielectric filter as recited in claim 4, wherein the signal blocking structure is free of plating.
6. A dielectric filter according to claim 4, characterized in that the recess (3) is a circular ring-shaped recess along the edge of the opening of the signal lead-in hole and/or the signal lead-out hole.
7. A dielectric filter according to any of claims 1-3, characterized in that the resonator cavities (2) arranged on the front side are arranged symmetrically to the resonator cavities (2) arranged on the back side.
8. A dielectric filter according to any of claims 1-3, further comprising a housing (4) adapted to receive the body (1), the housing (4) being snap-fitted to the body (1).
9. A communication base station, characterized in that it comprises a dielectric filter according to any of claims 1-8.
10. The communication base station according to claim 9, characterized in that it further comprises a metal antenna (5) in the shape of an arc.
11. The communication base station according to claim 9 or 10, further comprising a heat dissipation structure, wherein a plurality of the dielectric filters are disposed on the heat dissipation structure and arranged in an arch shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215656.0A CN111430859A (en) | 2020-03-24 | 2020-03-24 | Dielectric filter and communication base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010215656.0A CN111430859A (en) | 2020-03-24 | 2020-03-24 | Dielectric filter and communication base station |
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| Publication Number | Publication Date |
|---|---|
| CN111430859A true CN111430859A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010215656.0A Pending CN111430859A (en) | 2020-03-24 | 2020-03-24 | Dielectric filter and communication base station |
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| Country | Link |
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| CN (1) | CN111430859A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001237608A (en) * | 2000-02-21 | 2001-08-31 | Matsushita Electric Ind Co Ltd | Dielectric filter and producing method therefor |
| CN101924261A (en) * | 2010-07-05 | 2010-12-22 | 深圳市大富科技股份有限公司 | Communication equipment, medium filter and medium resonant rod |
| CN102610889A (en) * | 2012-04-16 | 2012-07-25 | 江苏贝孚德通讯科技股份有限公司 | Asymmetric normal TE01-mode dielectric filter with frequency compensation function |
| CN110224205A (en) * | 2019-05-30 | 2019-09-10 | 江苏灿勤科技股份有限公司 | Surface-mount type dielectric filter containing through-hole type input/output structure |
| CN211829147U (en) * | 2020-03-24 | 2020-10-30 | 深圳市大富科技股份有限公司 | Dielectric filter and communication base station |
-
2020
- 2020-03-24 CN CN202010215656.0A patent/CN111430859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001237608A (en) * | 2000-02-21 | 2001-08-31 | Matsushita Electric Ind Co Ltd | Dielectric filter and producing method therefor |
| CN101924261A (en) * | 2010-07-05 | 2010-12-22 | 深圳市大富科技股份有限公司 | Communication equipment, medium filter and medium resonant rod |
| CN102610889A (en) * | 2012-04-16 | 2012-07-25 | 江苏贝孚德通讯科技股份有限公司 | Asymmetric normal TE01-mode dielectric filter with frequency compensation function |
| CN110224205A (en) * | 2019-05-30 | 2019-09-10 | 江苏灿勤科技股份有限公司 | Surface-mount type dielectric filter containing through-hole type input/output structure |
| CN211829147U (en) * | 2020-03-24 | 2020-10-30 | 深圳市大富科技股份有限公司 | Dielectric filter and communication base station |
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