CN213071317U - Dielectric resonator, filter, duplexer, multiplexer and communication base station - Google Patents
Dielectric resonator, filter, duplexer, multiplexer and communication base station Download PDFInfo
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- CN213071317U CN213071317U CN202022635991.4U CN202022635991U CN213071317U CN 213071317 U CN213071317 U CN 213071317U CN 202022635991 U CN202022635991 U CN 202022635991U CN 213071317 U CN213071317 U CN 213071317U
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Abstract
The utility model discloses a dielectric resonator, including the medium body that has first dielectric constant and at least one embedding body that has the second dielectric constant, the embedding body is inlayed the medium is internal, the embedding body has at least a surface to be exposed, first dielectric constant is not equal to the second dielectric constant. The utility model also discloses a wave filter, duplexer and multiplexer. The utility model discloses an embedded structure has changed the structure of current syntonizer, has improved the industrial value of syntonizer, under the same condition of medium body volume the utility model discloses a medium syntonizer Q value obviously improves for the Q value of traditional syntonizer that punches.
Description
Technical Field
The utility model belongs to the technical field of communication, concretely relates to dielectric resonator, wave filter, duplexer, multiplexer, communication base station.
Background
An electromagnetic resonator is an element that stores certain electromagnetic energy, in which electric energy and magnetic energy are periodically converted into each other, a process called oscillation. The frequency of oscillation is called the resonant frequency. A conventional resonator is a metal cavity, and electric energy and magnetic energy are converted into each other in the cavity.
With the rapid development of wireless communication systems, high-performance and miniaturized passive devices have become a hot point of research. The traditional dielectric resonator filter is arranged in a metal waveguide, and has the defects of large volume, heavy weight and complex processing. In a filter commonly used at present, a blind hole is formed in a dielectric body to form a resonant cavity, and the size (such as depth, diameter and the like) of the blind hole is adjusted to adjust the resonant frequency, for example, chinese patent ZL201810247185.4 discloses a resonator with a blind hole formed in a dielectric body, the resonant frequency can be adjusted through the blind hole, the weight of the resonator is reduced to a certain extent, and the requirements of the current communication field on the filter can also be met.
However, with the advent of the 5G era, the entire communication system is required to have higher performance and smaller size. The existing filter structure can not meet the requirements of 5G on low delay, higher speed and more reliability. In order to meet the requirements of a 5G communication base station, the structural design of a resonator and a filter is more and more complex, the number and the shape of the holes and the grooves of the original resonator are changed, and the performance of the filter can be greatly improved; however, due to the change of the number and the shape of the holes and grooves, on one hand, the conductive metal material (the amount of silver paste) is increased, and the cost of the product is increased; on the other hand, because the use scene of the filter is mostly outdoor, the metal layer on the surface of the debugging hole is worn away along with the time, so that the product performance is damaged or the filter cannot be used; in addition, the difficulty of processing is also increased by the change of the number and the shape of the holes and grooves.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a dielectric resonator, which adopts an embedded structure, changes the structure of the prior resonator and improves the industrial value of the resonator.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a dielectric resonator comprising a dielectric body having a first dielectric constant and at least one inlay having a second dielectric constant, said inlay being embedded within said dielectric body, at least one surface of the inlay being exposed, said first dielectric constant not being equal to said second dielectric constant.
As further preferred scheme, the medium body on be provided with at least one end open-ended and hold the chamber, the embedding body cooperation set up in hold in the chamber, the exposed surface of embedding body is located the opening part.
In a further preferred embodiment, the first dielectric constant is larger than the second dielectric constant.
In a further preferred embodiment, the first dielectric constant is smaller than the second dielectric constant.
As a further preferred scheme, the medium body and the outer periphery of the embedding body of the present invention have an interface.
As a further preferable scheme, the surface of the medium body of the present invention is coated with a metal conductive layer. Preferably, the exposed surface of the insert is coated with a metallic conductive layer.
The utility model also discloses a dielectric resonator, this dielectric resonator be including the medium body that has first dielectric constant, at least one embedding body that has the second dielectric constant and at least one medium midbody that is located between medium body and the embedding body and has the third dielectric constant, the medium midbody cladding is in the embedding body periphery, the embedding body has at least a surface to be the exposed surface, the exposed surface flushes rather than the medium body surface at place, first dielectric constant is not equal to the second dielectric constant.
As a further preferred aspect, the dielectric intermediate of the present invention has an exposed surface that is flush with the exposed surface of the insert and the surface of the dielectric body.
As a further preferred scheme, the outer surface of the medium body is coated with a metal layer, and the exposed surface of the embedding body and the surface of the medium intermediate are both coated with the metal layer.
As a further preferable aspect, the medium intermediate body of the present invention is completely coated inside the medium body in which the medium body and the insertion body are directly attached.
As a further preferable aspect, the medium body and the medium intermediate of the present invention have interfaces at their contact surfaces and at their contact surfaces with the insert.
As a further preferred scheme, the medium body be the material of medium body for ceramic, glass, plastics, building stones, quartzy, concrete, precious stone, agate in one, the material of built-in body is ceramic, glass, plastics, building stones, quartzy, concrete, precious stone, agate in one.
As further preferred scheme, first dielectric constant's value range be 2 ~ 200, second dielectric constant's value range is 2 ~ 200.
Further, the utility model also provides a wave filter, this wave filter includes one at least the dielectric resonator.
Further, the utility model also provides a duplexer, this duplexer includes one at least the utility model dielectric resonator.
Further, the utility model also provides a multiplexer, this multiplexer includes one at least the utility model dielectric resonator.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the dielectric resonator of the utility model adopts an embedded structure, is a resonator without a hole, and changes the resonator structure of the traditional hole design; the resonator with the embedded structure does not need to be provided with a hole, so that the industrial value of the resonator is greatly improved, and the Q value of the resonator can be improved by 10-80% under the condition that the volume of the dielectric body is the same.
2. Dielectric resonator has changed energy storage distribution mode, dielectric resonator's energy storage is mainly concentrated inside the medium, remaining energy distributes in the space around with the exponential decay, has kept the structure of energy storage, and does not increase the structure of power consumption.
3. The embedded structure that dielectric resonator adopted has lower the processing degree of difficulty greatly, has improved the yield.
4. Dielectric resonator for prior art, its metal surface area reduces, has practiced thrift the use of silver thick liquid, has reduced the cost of product, has prolonged the life of product simultaneously.
5. Dielectric resonator can be applied to communication field's wave filter, duplexer, and multiplexer.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a dielectric resonator according to the present invention;
fig. 2 is a cross-sectional view of the dielectric resonator of fig. 1 in a direction a-a according to the present invention;
wherein the reference symbols are: 1. a dielectric body; 2. an insert.
Detailed Description
The utility model discloses the explanation of the relevant noun that appears:
"dielectric body" means the body portion of the resonator and "inlay" means the portion embedded in the dielectric body for forming the resonator with the body portion.
"exposed surface" refers to a surface that is not covered by the body of media.
The appearances of the phrases "first," "second," and the like in this specification are for purposes of description only, and are not intended to be limiting, nor are they to be construed as indicating or implying any relative importance.
As shown in fig. 1, the dielectric resonator of the present invention comprises a dielectric body 1 with a first dielectric constant and at least one embedded body 2 with a second dielectric constant, wherein the embedded body is embedded 2 in the dielectric body 1, at least one surface of the embedded body 2 is an exposed surface, and the first dielectric constant is not equal to the second dielectric constant. The utility model discloses in, the embedding body sets up inside the dielectric body, because dielectric constant inequality between them, the energy storage inequality of embedding body and dielectric body obtains different resonant frequency's syntonizer through the volume of adjusting dielectric body or/and the volume of embedding body, also can obtain different frequency's syntonizer through the embedding body that adopts different dielectric constant.
Example 1
In this embodiment, the dielectric resonator includes a dielectric body 1 having a first dielectric constant and at least one embedded body 2 having a second dielectric constant, the embedded body 2 is embedded in the dielectric body 1, at least one surface of the embedded body 2 is an exposed surface, the first dielectric constant is greater than the second dielectric constant, and a metal conductive layer is coated on the surface of the dielectric body 2. In this scheme, the stored energy of the dielectric resonator is mainly concentrated inside the dielectric, and the rest energy is distributed in the surrounding space with exponential decay. The structure changes the energy storage distribution, the frequency is not required to be reduced by drilling blind holes, the energy storage structure is reserved, and the energy consumption structure is not increased. This structure provides a resonator with a significantly improved Q-value compared to existing resonators.
Example 2
In this embodiment, the dielectric resonator includes a dielectric body 1 having a first dielectric constant and at least one embedded body 2 having a second dielectric constant, the embedded body 2 is embedded in the dielectric body 1, at least one surface of the embedded body 2 is an exposed surface, the first dielectric constant is smaller than the second dielectric constant, and a metal conductive layer is coated on the surface of the dielectric body 2. In the scheme, the equivalent dielectric constant is between the dielectric constant of the dielectric body and the dielectric constant of the embedded body, so that the size of the resonator is between the two, the size of the resonator can be obviously reduced, and the weight of the resonator is reduced.
Example 3
On the basis of above-mentioned embodiment 1 or embodiment 2 scheme, it is further, the medium body on be provided with at least one end open-ended and hold the chamber, the embedding body cooperation set up in hold in the chamber, the exposed surface of embedding body is located the opening part. On the basis of the above embodiments 1 to 3, further, the number of the embedded bodies may be two or more than three, and may be set according to the requirement of the resonator frequency.
On the basis of the above embodiments 1-3, further, the surface of the dielectric body of the present invention is coated with a metal conductive layer. Preferably, the exposed surface of the embedded body is flush with the surface of the medium body where the embedded body is located, and the exposed surface is also coated with the metal conducting layer. Preferably, the metal conductive layer on the surface of the dielectric body is the same as the metal conductive layer on the exposed surface. Furthermore, as further preferred scheme, the medium body surface cladding have the metal conducting layer. Preferably, the metal conductive layer may be, but not limited to, one of silver, copper, chromium, palladium, nickel copper, tin copper alloy, tin silver copper alloy, and the like. Preferably, the surface metal material is a silver plating layer, and is formed on the surface of the dielectric body by electroplating, electroless plating, printing, spraying, dipping, sputtering, physical deposition, chemical deposition and the like.
On the basis of the above embodiments 1 to 3, the accommodating chamber and the built-in body are in close contact without any gap. However, as a further preferred aspect, the dielectric body of the present invention has an interface with the outer periphery of the insert body. Because the dielectric body and the built-in body are made of two materials with different dielectric constants, the two materials cannot be fused, an obvious interface exists, and the existence of the interface can be an obvious energy storage difference between the dielectric body and the built-in body.
Example 4
A dielectric resonator comprises a dielectric body with a first dielectric constant, at least one embedded body with a second dielectric constant and at least one dielectric intermediate body which is positioned between the dielectric body and the embedded body and has a third dielectric constant, wherein the dielectric intermediate body is wrapped on the periphery of the embedded body, at least one surface of the embedded body is an exposed surface, and the first dielectric constant is not equal to the second dielectric constant. The scheme comprises a scheme of a multilayer structure of a medium body, medium intermediates and an embedded body, wherein the medium intermediates can be one or more, the medium intermediates are wrapped from inside to outside in a hierarchical mode, the medium intermediates which are mutually contacted have different dielectric constants, namely the medium intermediates which are mutually contacted adopt different materials, but the dielectric constants of the medium intermediates which are not mutually contacted can be the same, namely the medium intermediates which are not mutually contacted can adopt the same materials; and media interposers that do not contact the media body or the inlay may be made of the same material as the media body or the inlay.
On the basis of the scheme of above-mentioned embodiment 4, as the scheme of further deformation, medium midbody have exposed surface, preferably the surface flushes with the surface of the exposed surface of embedding body and medium body.
On the basis of the scheme of above-mentioned embodiment 4, as the scheme of further deformation, medium body surface cladding have the metal level, the surface of the exposed surface of the embedding body and medium midbody all coats and has the metal level.
On the basis of the scheme of the above-mentioned embodiment 4, as the scheme of further deformation, the medium intermediate body by the complete cladding inside the medium body that medium body and embedding body are direct.
In addition to the embodiment of example 4, interfaces exist at the contact surface between the dielectric body and the dielectric intermediate and at the contact surface between the dielectric intermediate and the insert.
On the basis of the above embodiment 1-embodiment 4, further, the material that the medium body is one of ceramic, glass, plastics, stone, crystal, concrete, precious stone and agate, and the material of the built-in body is one of ceramic, glass, plastics, stone, crystal, concrete, precious stone and agate. In the present invention, considering the requirements of the resonator reference field on its performance, cost, weight and volume, the preferred material for the dielectric body and the inner body is ceramic, crystal or glass.
On the basis of above-mentioned embodiment 1-4, furtherly, as further preferred scheme, first dielectric constant's value range be 2 ~ 200, second dielectric constant's value range is 2 ~ 200. The third dielectric constant has a value in the range of 2 to 200.
On the basis of the above embodiments 1-4, further, the shape of the embedded body can be selected from, but not limited to, a solid structure such as a rectangular parallelepiped, a cube, a trapezoidal frustum, a cylinder, a truncated cone, a prism, and a pyramid.
Comparative example 1
In order to verify under the condition that the volume is the same, the difference in electrical property of syntonizer and traditional punching syntonizer, further, carry out following performance contrast. The utility model discloses a dielectric resonator and traditional syntonizer's parameter condition and performance result refer to table 1.
Table 1: resonator parameter and performance comparison
From the data in table 1 above, it can be seen that the Q value of the single cavity of the resonator in embodiment 1 reaches 1972 under the same frequency and the material and volume of the dielectric body are the same, and the Q value of the single cavity is increased by 29.7% compared with the Q value of the single cavity of the conventional blind hole resonator. The dielectric body of the resonator in embodiment 2 is made of the same material and has the same volume as the conventional perforated resonator, and the Q value of the resonator is 2280 at the same frequency, which is relatively increased by 50.0%.
Comparative example 2
In order to verify under the same condition of electrical property, the difference on the syntonizer volume of syntonizer and traditional punching syntonizer, further, carry out following performance contrast. The utility model discloses a dielectric resonator and traditional syntonizer's parameter condition and performance result refer to table 2.
Table 2: resonator parameter and performance comparison
| Item | Dielectric resonator of |
Dielectric resonator of |
Conventional punch resonator |
| Bulk parameter of medium | A ceramic body having a dielectric constant of 20 | A ceramic body having a dielectric constant of 20 | Ceramic material with a dielectric constant of 20 |
| Insert parameters | Ceramic cylinder with dielectric constant of 8 | Ceramic cylinder with dielectric constant of 45 | / |
| Single chamber Q value | 1500 | 1500 | 1500 |
| Size of the dielectric body | 7mm*7mm*5mm | 6mm*6mm*4mm | 11mm*11mm*6mm |
| Rate of volume reduction | 66.3％ | 80.2％ | / |
From the data in table 1 above, it can be seen that when the dielectric bulk material and volume are the same and the resonator satisfies the same electrical performance, i.e. the Q value is 1500, the volume of the resonator of example 1 is reduced by 66.3% compared to the volume of the resonator with conventional holes. The volume of the resonator of embodiment 2 is reduced by 80.2% compared with the volume of the conventional perforated resonator.
Further, the present invention provides a filter including at least one dielectric resonator according to any one of embodiments 1 to 3. The wave filter can be bimodulus, three mould, four mould or multimode wave filter structures, all have the wave filter of an arbitrary mode of resonant cavity can all adopt the utility model discloses a dielectric resonator.
Further, the present invention provides a duplexer, which includes at least one of the dielectric resonators according to any one of the above embodiments 1 to 3 of the present invention.
Further, the present invention also provides a multiplexer, which includes at least one dielectric resonator according to any one of the above embodiments 1 to 3 of the present invention.
The utility model also discloses a communication base station, at least include the dielectric resonator of any scheme of above-mentioned embodiment 1-embodiment 5. The communication base station may specifically be, but is not limited to, a communication device or a communication base station such as a macro base station and a small base station. In short, any communication equipment including a dielectric resonator can adopt the dielectric resonator of the closed structure of the present invention to improve its industrial value.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (16)
1. A dielectric resonator comprising a dielectric body having a first dielectric constant and at least one inlay having a second dielectric constant, said inlay being embedded in said dielectric body, said inlay having at least one surface which is exposed, said first dielectric constant being different from said second dielectric constant.
2. The dielectric resonator of claim 1, wherein the dielectric body is provided with a receiving cavity with at least one open end, the insert is disposed in the receiving cavity, and an exposed surface of the insert is located at the open end.
3. A dielectric resonator as claimed in claim 1 or 2, wherein the first dielectric constant is greater than the second dielectric constant.
4. A dielectric resonator as claimed in claim 1 or 2, wherein the first dielectric constant is less than the second dielectric constant.
5. A dielectric resonator as claimed in claim 1 or 2, wherein the dielectric body interfaces with a portion of the inlay within the dielectric body.
6. A dielectric resonator as claimed in claim 1 or 2, wherein the dielectric body surface is coated with a metallic conductive layer, and the exposed surface of the inlay is coated with a metallic conductive layer.
7. A dielectric resonator is characterized by comprising a dielectric body with a first dielectric constant, at least one embedded body with a second dielectric constant and at least one dielectric intermediate body which is positioned between the dielectric body and the embedded body and has a third dielectric constant, wherein the dielectric intermediate body is wrapped on the periphery of the embedded body, at least one surface of the embedded body is an exposed surface, and the first dielectric constant is not equal to the second dielectric constant.
8. The dielectric resonator of claim 7, wherein the dielectric intermediate body has an exposed surface.
9. The dielectric resonator of claim 7, wherein the dielectric body has a metal layer coated on an outer surface thereof, and wherein the exposed surface of the inlay and the surface of the dielectric intermediate are coated with the metal layer.
10. A dielectric resonator as claimed in claim 7, wherein the dielectric intermediate body is completely encased within the dielectric body directly between the dielectric body and the insert.
11. A dielectric resonator as claimed in claim 7, wherein an interface exists between the dielectric body and the intermediate body and between the intermediate body and the insert.
12. The dielectric resonator according to any of claims 1-2 and 7-11, wherein the first dielectric constant has a value in the range of 2 to 200, and the second dielectric constant has a value in the range of 2 to 200.
13. A filter comprising at least one dielectric resonator according to any one of claims 1-12.
14. A duplexer, characterized by comprising at least one dielectric resonator as claimed in any one of claims 1 to 12.
15. A multiplexer comprising at least one dielectric resonator as claimed in any one of claims 1 to 12.
16. A telecommunications base station comprising at least one dielectric resonator as claimed in any one of claims 1 to 12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022635991.4U CN213071317U (en) | 2020-11-13 | 2020-11-13 | Dielectric resonator, filter, duplexer, multiplexer and communication base station |
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| CN202022635991.4U CN213071317U (en) | 2020-11-13 | 2020-11-13 | Dielectric resonator, filter, duplexer, multiplexer and communication base station |
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| CN213071317U true CN213071317U (en) | 2021-04-27 |
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