CN215644986U - Broadband dielectric resonator antenna and communication equipment - Google Patents
Broadband dielectric resonator antenna and communication equipment Download PDFInfo
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- CN215644986U CN215644986U CN202121283195.7U CN202121283195U CN215644986U CN 215644986 U CN215644986 U CN 215644986U CN 202121283195 U CN202121283195 U CN 202121283195U CN 215644986 U CN215644986 U CN 215644986U
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Abstract
The utility model provides a broadband dielectric resonator antenna and communication equipment, wherein metal columns which are uniformly distributed are arranged in a dielectric resonance block, the dielectric resonance block is arranged on a dielectric layer, and the metal columns play a role in binding energy in the dielectric resonance block, so that the dielectric resonance block with a low dielectric constant can be equivalent to the dielectric resonance block with a high dielectric constant to realize a radiation effect, and meanwhile, the metal columns which are uniformly distributed also enable the dielectric resonance block to excite resonance modes with different mode numbers, so that the single dielectric resonance block with the low dielectric constant can be equivalent to the dielectric resonance block with the high dielectric constant to realize the radiation effect of the broadband antenna, and meanwhile, the integration of the dielectric resonance block and the dielectric layer in a welding or gluing mode is avoided, and the reliability of the broadband dielectric resonator antenna is improved.
Description
Technical Field
The utility model relates to the technical field of antennas, in particular to a broadband dielectric resonator antenna and communication equipment.
Background
5G is the focus of research and development in the world, and 5G standard has become common in the industry by developing 5G technology. The peak speed of a user in an enhanced mobile bandwidth scene is 20Gbps, and the lowest user experience rate is 100 Mbps. Due to the unique characteristics of high carrier frequency and large bandwidth of millimeter waves, millimeter waves are the main means for realizing 5G ultrahigh data transmission rate. Meanwhile, according to the technical specification of 5G terminal radio frequency of 3GPP TS38.101-2 and the report of TR38.817 terminal radio frequency, the 5G millimeter wave frequency band has n257(26.5-29.5GHz), n258(24.25-27.25GHz), n260(37-40GHz), n261(27.5-28.35GHz) and n259 (39.5-43GHz), so that a broadband antenna needs to be designed to cover these frequency bands.
However, in order to realize a wide bandwidth, a dielectric resonant block with a high dielectric constant needs to be used to excite different resonant modes to meet the requirement of the wide bandwidth. However, objects with high dielectric constant and low loss, such as ceramics, need to be processed separately and then integrated with the feed network by means of glue, SMT welding and the like. Therefore, this design not only increases the difficulty of design, but also introduces errors by soldering, which reduces the reliability of the wideband dielectric resonator antenna.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: provided is a wide band dielectric resonator antenna, which improves the reliability of the wide band dielectric resonator antenna.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a broadband dielectric resonator antenna comprises a dielectric resonator block and a dielectric layer;
metal columns which are uniformly distributed are arranged in the dielectric resonator block;
the dielectric resonator block is disposed on the dielectric layer.
Further, the dielectric resonator block includes a first sub-dielectric resonator block and a second sub-dielectric resonator block;
the second sub-dielectric resonance block is arranged on the dielectric layer;
the first sub-dielectric resonance block is arranged on one side, far away from the dielectric layer, of the second sub-dielectric resonance block;
and metal columns which are uniformly distributed are arranged in the first sub-medium resonant block.
Further, the first sub-dielectric resonant block and the second sub-dielectric resonant block are both cuboids, and the material and the bottom surface are the same in size.
Further, the dielectric constant of the dielectric resonator mass is lower than 3.
Further, the metal posts are arranged in the first sub-dielectric resonator block at equal intervals by taking the center of the first sub-dielectric resonator block as a symmetric center point.
Further, the metal posts are 5 by 5 array metal posts.
Furthermore, the device also comprises a metal floor and a microstrip line;
the metal floor is arranged between the dielectric layer and the dielectric resonance block;
the microstrip line is arranged on one side of the dielectric layer, which is far away from the metal floor;
and a feed gap is arranged on the metal floor.
Further, the projection of the metal floor on the dielectric resonance block covers the uniformly arranged metal columns.
In order to solve the technical problem, the utility model adopts another technical scheme as follows:
a communication device comprises the broadband dielectric resonator antenna.
The utility model has the beneficial effects that: through set up the metal post of evenly arranging in the dielectric resonator piece, and set up the dielectric resonator piece on the dielectric layer, play the constraint effect to the energy in the dielectric resonator piece through the metal post, make the dielectric resonator piece that has the low dielectric constant can be equivalent to the dielectric resonator piece realization radiation effect of high dielectric constant, the metal post of evenly arranging still makes the dielectric resonator piece can excite the resonant mode of different mode numbers simultaneously, thereby make the dielectric resonator piece of single low dielectric constant can be equivalent to the dielectric resonator piece of high dielectric constant and realize the radiation effect of broadband antenna, integrated dielectric resonator piece and dielectric layer through welding or sticky mode have been avoided simultaneously, the reliability of broadband dielectric resonator antenna is improved.
Drawings
Fig. 1 is a schematic structural diagram of a broadband dielectric resonator antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wideband dielectric resonator antenna according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a positional relationship between a metal post and a metal floor in a wideband dielectric resonator antenna according to an embodiment of the present invention;
fig. 4 is a schematic top view of a wideband dielectric resonator antenna according to an embodiment of the present invention;
fig. 5 is a graph showing a variation of an S-parameter curve of a wideband dielectric resonator antenna according to an embodiment of the present invention;
fig. 6 is a graph comparing S-parameters of a 4 x 4 array metal pillar of a wideband dielectric resonator antenna and a rectangular dielectric resonator block with a standard dielectric constant of 17 according to an embodiment of the present invention;
fig. 7 is an electric field distribution diagram of a wideband dielectric resonator antenna in the TE111 mode corresponding to 5 × 5 array metal pillars according to an embodiment of the present invention;
fig. 8 is an electric field distribution diagram of a wideband dielectric resonator antenna in the TE131 mode corresponding to 5 × 5 array metal pillars according to an embodiment of the present invention;
description of reference numerals:
1. a dielectric resonator block; 11. a first sub-dielectric resonator block; 12. a second sub-dielectric resonator block; 2. a dielectric layer; 3. a metal floor; 4. a microstrip line; 5. a feed gap; 6. a metal pillar.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a broadband dielectric resonator antenna includes a dielectric resonator block and a dielectric layer;
metal columns which are uniformly distributed are arranged in the dielectric resonator block;
the dielectric resonator block is disposed on the dielectric layer.
From the above description, the beneficial effects of the present invention are: through set up the metal post of evenly arranging in the dielectric resonator piece, and set up the dielectric resonator piece on the dielectric layer, play the constraint effect to the energy in the dielectric resonator piece through the metal post, make the dielectric resonator piece that has the low dielectric constant can be equivalent to the dielectric resonator piece realization radiation effect of high dielectric constant, the metal post of evenly arranging still makes the dielectric resonator piece can excite the resonant mode of different mode numbers simultaneously, thereby make the dielectric resonator piece of single low dielectric constant can be equivalent to the dielectric resonator piece of high dielectric constant and realize the radiation effect of broadband antenna, integrated dielectric resonator piece and dielectric layer through welding or sticky mode have been avoided simultaneously, the reliability of broadband dielectric resonator antenna is improved.
Further, the dielectric resonator block includes a first sub-dielectric resonator block and a second sub-dielectric resonator block;
the second sub-dielectric resonance block is arranged on the dielectric layer;
the first sub-dielectric resonance block is arranged on one side of the second sub-dielectric resonance block, which is far away from the dielectric layer;
and metal columns which are uniformly distributed are arranged in the first sub-medium resonant block.
As can be seen from the above description, the first sub-dielectric resonant block and the second sub-dielectric resonant block form the dielectric resonant block, the first sub-dielectric resonant block provided with the metal posts uniformly arranged is disposed on the side away from the dielectric layer, and the second sub-dielectric resonant block is disposed on the side close to the dielectric layer, so that the dielectric layer and the dielectric block are connected more easily and conveniently.
Further, the first sub-dielectric resonant block and the second sub-dielectric resonant block are both cuboids, and the material and the bottom surface are the same in size.
As can be seen from the above description, the first sub-dielectric resonator block and the second sub-dielectric resonator block are both rectangular, and the material and the bottom surface have the same size, so that the first sub-dielectric resonator block and the second sub-dielectric resonator block have the same characteristics, thereby improving the overall equivalent effect of the low-dielectric-constant dielectric resonator block, and more easily achieving the radiation effect of equivalent high dielectric constant.
Further, the dielectric constant of the dielectric resonator mass is lower than 3.
From the above description, it can be known that by using the first sub-dielectric resonance block and the second sub-dielectric resonance block with dielectric constants lower than 3, not only the cost of the dielectric resonance block is reduced, but also the connection mode of the dielectric resonance block and the PCB board is simplified, and the production cost of the dielectric resonator is further reduced.
Further, the metal posts are arranged in the first sub-dielectric resonator block at equal intervals by taking the center of the first sub-dielectric resonator block as a symmetric center point.
According to the description, the metal columns are arranged in the first sub-dielectric resonant block at equal intervals by taking the center of the first sub-dielectric resonant block as a symmetric center point, so that the metal columns are uniformly distributed in the first sub-dielectric resonant block to strengthen the binding force on the energy in the dielectric resonant block, the dielectric constant of the equivalent dielectric resonant block is improved, and the radiation capability of the antenna is improved.
Further, the metal posts are 5 by 5 array metal posts.
From the above description, it can be known that the radiation effect of the dielectric resonator antenna is optimized under an effective size condition by arranging the metal posts into an array of 5 × 5, so that the dielectric resonator antenna can cover a plurality of 5G frequency bands, and the bandwidth of the antenna is improved.
Furthermore, the device also comprises a metal floor and a microstrip line;
the metal floor is arranged between the dielectric layer and the dielectric resonance block;
the microstrip line is arranged on one side of the dielectric layer, which is far away from the metal floor;
and a feed gap is arranged on the metal floor.
According to the above description, the feed gap is arranged on the metal floor, and the microstrip line is arranged on the side of the dielectric layer far away from the metal floor, so that the interference of the feed network on the coupling of the gap and the dielectric block is reduced, and the coupling effect is improved.
Further, the projection of the metal floor on the dielectric resonance block covers the uniformly arranged metal columns.
As can be seen from the above description, by covering the metal posts uniformly arranged on the projection of the metal floor on the dielectric resonator block, the radiation emitted by the dielectric resonator block can be radiated in the main direction as much as possible, thereby increasing the gain of the antenna in the main direction.
Another embodiment of the present invention provides a communication device including the above dielectric resonator antenna.
The dielectric resonator antenna can be applied to a scene of a millimeter wave module multi-chip of a 5G millimeter wave communication system, such as a handheld mobile device, and the following description is given by using specific embodiments:
example one
Referring to fig. 1 and 2, a broadband dielectric resonator antenna includes a dielectric resonator block 1, a dielectric layer 2, a metal floor 3, and a microstrip line 4;
metal columns 6 which are uniformly distributed are arranged in the medium resonance block 1; the dielectric resonance block 1 is arranged on the dielectric layer 2; the metal floor 3 is arranged between the dielectric layer 2 and the dielectric resonance block 1; the microstrip line 4 is arranged on one side of the dielectric layer 2 far away from the metal floor 3; wherein the dielectric resonance block 1 includes a first sub-dielectric resonance block 11 and a second sub-dielectric resonance block 12; the second sub-dielectric resonance block is arranged on the dielectric layer 2; the first sub-dielectric resonance block is arranged on one side, far away from the dielectric layer 2, of the second sub-dielectric resonance block; an EBG structure (Electromagnetic Band Gap) is adopted to improve the gain of the antenna;
the first sub-dielectric resonance block 11 and the second sub-dielectric resonance block 12 are both cuboids, and the material and the bottom surface are the same in size; the bottom surface of the first sub-dielectric resonant block 11 is a surface where the first sub-dielectric resonant block 11 is connected with the second sub-dielectric block; the bottom surface of the second sub-dielectric resonant block 12 is the surface of the second sub-dielectric block connected with the metal layer; in an alternative embodiment, the first sub-dielectric resonator 11 and the second sub-dielectric resonator are both made of LCP (Liquid Crystal Polymer) having a dielectric constant of 3;
metal columns 6 which are uniformly distributed are arranged in the first sub-medium resonance block 11; the distances between the adjacent metal columns 6 are equal; the height of the metal pillar 6 is the same as that of the first sub-dielectric resonator block 11, one end of the metal pillar 6 is located on the upper surface of the first sub-dielectric resonator block 11, and the other end is located on the lower surface of the first sub-dielectric resonator block 11; the first sub-dielectric resonance block 11 and the second sub-dielectric resonance block 12 are dielectric layers of a PCB and are directly connected to the PCB;
referring to fig. 3, a feed gap 5 is formed on the metal floor 3; the feed gap 5 is perpendicular to the microstrip line 4; the projection of the metal floor 3 on the dielectric resonator block 1 covers the uniformly arranged metal posts 6.
Example two
The difference between the present embodiment and the first embodiment is that the arrangement of the metal posts 6 is defined;
referring to fig. 4, the metal posts 6 are disposed in the first sub-dielectric resonator 11 at equal intervals with the center of the first sub-dielectric resonator 11 as a center point of symmetry; the metal posts 6 are arranged in an array, the distance from the metal post 6 on each outer side of the metal post array to the adjacent side edge of the first sub-dielectric resonant block 11 is equal, and the metal posts 6 are closely arranged at a fixed interval;
fig. 5 is a graph showing an S-parameter curve of the wideband dielectric resonator antenna of the present embodiment; exciting a dielectric resonator antenna TE by increasing the number of the metal posts 6 while keeping the intervals of the metal posts 6 constant131Mode and TE111The mode resonance shows the variation trend of the S parameter of the array metal pillar 6, namely, the 3 × 3 metal pillar array, the 4 × 4 metal pillar array and the 5 × 5 metal pillar array; the S parameter curve of the 3X 3 metal column array can be seen, and the curve is in a range of-10 dB and comprises a frequency band about 25 GHz; when the metal pillars 6 are added to the 4 x 4 metal pillar array, it can be seen that the curve includes a frequency band of about 25GHz-30GHz within the range of-15 dB; referring to fig. 6, the S parameter of the 4 x 4 metal pillar array is nearly the same as the S parameter of the rectangular dielectric resonator block 1 with the standard DK of 17; when the metal pillars are further added to the 5 x 5 metal pillar array, it can be seen that the curve includes the frequency band of 22GHz-36GHz in the range of-10 dB, and the frequency band covered by the 5G communication includes: n257(26.5-29.5GHz), N258(24.25-27.25GHz) and N261(27.5-28.35GHz), so that the broadband effect is realized;
referring to fig. 7 and 8, the electric field distribution diagram of the dielectric resonator antenna corresponding to the 5 × 5 metal pillar array in this embodiment is shown; wherein, FIG. 7 shows the process at TE111Electric field profile in mode; FIG. 8 shows the state of TE131Electric field profile in mode.
EXAMPLE III
A communication device comprising the broadband dielectric resonator antenna according to the first embodiment or the second embodiment.
In summary, according to the broadband dielectric resonator antenna and the communication device provided by the present invention, the metal columns are uniformly arranged in the dielectric resonator, and the metal columns are equidistantly arranged in the first sub-dielectric resonator by taking the center of the first sub-dielectric resonator as the symmetric center point, so that the metal columns tightly bind the energy in the dielectric resonator, the dielectric resonator with low dielectric constant can be equivalent to the dielectric resonator with high dielectric constant to realize the radiation effect, and the uniformly arranged metal columns also enable the dielectric resonator to excite the resonant modes with different mode numbers, so that the single dielectric resonator with low dielectric constant can be equivalent to the dielectric resonator with high dielectric constant to realize the radiation effect of the broadband antenna, and the EBG structure is adopted, and the projection of the metal floor on the dielectric resonator is covered with the uniformly arranged metal columns, so that the gain of the antenna is increased, the integration of the dielectric resonator block and the dielectric layer in a welding or gluing mode is avoided, and the reliability of the broadband dielectric resonator antenna is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (9)
1. A broadband dielectric resonator antenna is characterized by comprising a dielectric resonant block and a dielectric layer;
metal columns which are uniformly distributed are arranged in the dielectric resonator block;
the dielectric resonator block is disposed on the dielectric layer.
2. The wideband dielectric resonator antenna of claim 1, wherein said dielectric resonator mass comprises a first sub-dielectric resonator mass and a second sub-dielectric resonator mass;
the second sub-dielectric resonance block is arranged on the dielectric layer;
the first sub-dielectric resonance block is arranged on one side, far away from the dielectric layer, of the second sub-dielectric resonance block;
and metal columns which are uniformly distributed are arranged in the first sub-medium resonant block.
3. The wideband dielectric resonator antenna according to claim 2, wherein the first sub-dielectric resonator block and the second sub-dielectric resonator block are each a rectangular parallelepiped, and are made of the same material and have the same size as the bottom surface.
4. The wideband dielectric resonator antenna of claim 1, wherein said dielectric resonator mass has a dielectric constant of less than 3.
5. The wideband dielectric resonator antenna of claim 2, wherein said metal posts are disposed in said first sub-dielectric resonator block at equal intervals with the center of said first sub-dielectric resonator block as a center point of symmetry.
6. The wide-band dielectric resonator antenna of claim 5, wherein said metal posts are 5 x 5 array metal posts.
7. The wide-band dielectric resonator antenna according to claim 1, further comprising a metal ground plate and a microstrip line;
the metal floor is arranged between the dielectric layer and the dielectric resonance block;
the microstrip line is arranged on one side of the dielectric layer, which is far away from the metal floor;
and a feed gap is arranged on the metal floor.
8. The wideband dielectric resonator antenna of claim 7, wherein the projection of said metal ground plane onto said dielectric resonator mass covers said uniformly arranged metal posts.
9. A communication device comprising the wide-band dielectric resonator antenna according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121283195.7U CN215644986U (en) | 2021-06-09 | 2021-06-09 | Broadband dielectric resonator antenna and communication equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121283195.7U CN215644986U (en) | 2021-06-09 | 2021-06-09 | Broadband dielectric resonator antenna and communication equipment |
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| Publication Number | Publication Date |
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| CN215644986U true CN215644986U (en) | 2022-01-25 |
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| CN202121283195.7U Active CN215644986U (en) | 2021-06-09 | 2021-06-09 | Broadband dielectric resonator antenna and communication equipment |
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