CN112599986A - Microstrip antenna array with good isolation effect - Google Patents
Microstrip antenna array with good isolation effect Download PDFInfo
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- CN112599986A CN112599986A CN202011409833.5A CN202011409833A CN112599986A CN 112599986 A CN112599986 A CN 112599986A CN 202011409833 A CN202011409833 A CN 202011409833A CN 112599986 A CN112599986 A CN 112599986A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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Abstract
The invention relates to a microstrip antenna array with a good isolation effect, which comprises a plurality of microstrip antenna units arranged in an array, wherein isolation units are arranged between every two adjacent microstrip antenna units, each isolation unit comprises four super surfaces arranged in an equilateral rhombus, each super surface comprises a dielectric layer and super surface structure units, a plurality of super surface structure units are uniformly arranged on each dielectric layer, each super surface structure unit comprises a plurality of rhombic annular graphene films nested from inside to outside, the circumferences of the plurality of rhombic annular graphene films are sequentially increased from inside to outside, the corresponding four sides of different rhombic annular graphene films are parallel to each other, the distances between the adjacent two sides of the different rhombic annular graphene films are equal, and the upper included angle and the lower included angle of each rhombic annular graphene film are equal and are both 20-30 degrees. The invention can obviously reduce the mutual coupling of the microstrip antenna units in the microstrip antenna array, and has light material, simple structure and convenient popularization and use.
Description
Technical Field
The invention relates to the field of antenna isolation, in particular to a microstrip antenna array with a good isolation effect.
Background
The base station antenna is more and more important as the perception organ of the communication network and the position of the base station antenna in the network, and is the key point of the base station construction. In recent years, broadband dual-polarized antennas and arrays thereof have been widely used as base station antennas. On one hand, the wider impedance bandwidth can meet the real condition that a plurality of mobile communication technical standards coexist for a long time; on the other hand, the good dual polarization characteristic can effectively resist multipath fading and improve the channel capacity. However, for a large-scale microstrip antenna array, it is required to arrange a plurality of microstrip antenna units under limited space resources, so that the unit spacing becomes very close, resulting in strong mutual coupling between array elements.
Disclosure of Invention
The present invention aims to provide a microstrip antenna array with good isolation effect.
The technical scheme for solving the technical problems is as follows:
the microstrip antenna array with good isolation effect comprises a plurality of microstrip antenna units arranged in an array, wherein isolation units are arranged between every two adjacent microstrip antenna units, each isolation unit comprises four super surfaces which are arranged in an equilateral rhombus, each super surface comprises a dielectric layer and super surface structure units, a plurality of super surface structure units are uniformly arranged on the dielectric layer, each super surface structure unit comprises a plurality of rhombic annular graphene films which are nested from inside to outside, the circumferences of the rhombic annular graphene films are sequentially increased from inside to outside, the corresponding four edges of different rhombic annular graphene films are parallel to each other, the distances between adjacent sides of different rhombic annular graphene films are equal, and the upper included angle and the lower included angle of each rhombic annular film are equal and are 20-30 degrees;
a tooth-shaped graphene film isolation strip is arranged between the isolation unit and the adjacent microstrip antenna unit, and the graphene film is a flexible graphene film.
Furthermore, graphene film wave-shaped isolation strips are arranged on the upper surfaces of the microstrip antenna units on the two sides of the super surface.
Further, the preparation method of the graphene film comprises the following steps:
step 1: dispersing graphene oxide with ultrapure water, uniformly coating the dispersed graphene oxide on a PET (polyethylene terephthalate) film, and drying to form a graphene oxide film;
step 2: treating the graphene oxide film obtained in the step 1 at the temperature of 600-;
and step 3: and (3) rolling the processed graphene oxide film obtained in the last step into a film of 30-80 μm to obtain the graphene film.
Further, the thickness of the rhombic annular graphene film is 50-100 μm.
Furthermore, the number of the rhombic annular graphene films in the super-surface structure unit is not less than two.
Further, arc-shaped graphene films are arranged at four corners of the diamond annular graphene film on the outermost side, and the circle center of each arc-shaped graphene film is overlapped with the center of each diamond annular graphene film.
Further, the circular arc graphene film is a circular arc graphene film.
Furthermore, four sides of the rhombic annular graphene film are equal, and the length of a single side is not less than the width of the radiating body of the microstrip antenna unit.
The invention has the beneficial effects that: the invention can obviously reduce the mutual coupling of the microstrip antenna units in the microstrip antenna array, and has light material, simple structure and convenient popularization and use.
Drawings
FIG. 1 is a perspective view showing the structure of example 1 of the present invention;
FIG. 2 is a front view of the structure of example 1 of the present invention;
FIG. 3 is a side view of the structure of example 1 of the present invention;
FIG. 4 is a side view of the structure of example 2 of the present invention;
fig. 5 is a graph comparing the isolation effect of the present invention and the comparative example.
In the drawings, the reference numerals designate the following parts:
1. a microstrip antenna unit; 2. a dielectric layer; 3. a diamond-shaped ring graphene film; 4. a circular arc graphene film; 5. wave-shaped isolation strip
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
a tooth-shaped graphene film isolation strip is arranged between the isolation unit and the adjacent microstrip antenna unit 1, and the graphene film is a flexible graphene film.
The upper surfaces of the microstrip antenna units 1 on the two sides of the super surface are provided with graphene film wave-shaped isolation strips 5.
In this embodiment, the preparation method of the graphene film includes the following steps:
step 1: dispersing graphene oxide with ultrapure water, uniformly coating the dispersed graphene oxide on a PET (polyethylene terephthalate) film, and drying to form a graphene oxide film;
step 2: processing the graphene oxide film obtained in the step 1 at 800 ℃ for 1 hour under the protection of argon, and then reducing the graphene oxide film at 3000 ℃ to obtain a processed graphene oxide film;
and step 3: and (3) rolling the processed graphene oxide film obtained in the last step into a film of 50 microns to obtain the graphene film.
In this embodiment, the thickness of the rhombic annular graphene film 3 is 80 μm.
In this embodiment, the number of the diamond-shaped annular graphene films 3 in the super-surface structure unit is two.
In this embodiment, circular arc-shaped graphene film-shaped graphene films 4 are disposed at four corners of the diamond-shaped annular graphene film 3 on the outermost side, and the circle center of each circular arc-shaped graphene film 4 coincides with the center of the diamond-shaped annular graphene film 3. The method for preparing the graphene film of the circular arc graphene film is also shown in the above method.
In this embodiment, the circular arc graphene films 4 are 1/8 circular arc graphene films, the distances between adjacent circular arc graphene films 4 are equal, and the radius of each circular arc graphene film 4 is 12 mm.
In this embodiment, four sides of the diamond-shaped annular graphene film 3 are equal and a single side length is not less than a width of a microstrip antenna unit radiator.
As shown in fig. 4, the difference between embodiment 2 and embodiment 1 is that the super-surface in embodiment 2 is vertically disposed on the upper surface and the lower surface of the microstrip antenna unit.
The isolation of the microstrip antenna arrays of examples 1, 2 and the unloaded isolation strip and super surface case were tested at different frequencies in a microwave dark room. As can be seen from fig. 5, at 4 to 5GHz, the microstrip antenna arrays of embodiments 1 and 2 are both greatly improved compared to the case where no isolation unit is added, and the isolation effect of embodiment 1 is also obviously improved compared to embodiment 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The microstrip antenna array with good isolation effect is characterized by comprising a plurality of microstrip antenna units (1) arranged in an array, isolation units are arranged between the adjacent microstrip antenna units (1), the isolation unit comprises four super surfaces which are arranged into an equilateral rhombus, the super surfaces comprise a medium layer (2) and super surface structure units, a plurality of super-surface structure units are uniformly arranged on the medium layer (2), each super-surface structure unit comprises a plurality of rhombic annular graphene films (3) which are nested from inside to outside, the circumferences of the rhombic annular graphene films (3) are sequentially increased from inside to outside, the corresponding four sides of different rhombic annular graphene films (3) are parallel to each other, the distances between the adjacent two sides of different rhombic annular graphene films (3) are equal, the upper included angle and the lower included angle of the rhombic annular graphene film (3) are equal and are both 20-30 degrees;
a tooth-shaped graphene film isolation strip is arranged between the isolation unit and the adjacent microstrip antenna unit (1), and the graphene film is a flexible graphene film.
2. The microstrip antenna array with good isolation effect according to claim 1, wherein the upper surfaces of the microstrip antenna units (1) on both sides of the super surface are provided with graphene film wave-shaped isolation strips (5).
3. The microstrip antenna array with good isolation effect according to any one of claims 1 or 2, wherein the preparation method of the graphene film comprises the following steps:
step 1: dispersing graphene oxide with ultrapure water, uniformly coating the dispersed graphene oxide on a PET (polyethylene terephthalate) film, and drying to form a graphene oxide film;
step 2: treating the graphene oxide film obtained in the step 1 at the temperature of 600-;
and step 3: and (3) rolling the processed graphene oxide film obtained in the last step into a film of 30-80 μm to obtain the graphene film.
4. The microstrip antenna array with good isolation effect according to claim 1, wherein the thickness of the diamond-shaped annular graphene film (3) is 50-100 μm.
5. The microstrip antenna array with good isolation effect according to claim 1, wherein the number of the rhombic annular graphene films (3) in the super-surface structure unit is not less than two.
6. The microstrip antenna array with good isolation effect according to claim 1, wherein arc-shaped graphene films (4) are arranged at four corners of the diamond-shaped annular graphene film (3) at the outermost side, and the circle center of each arc-shaped graphene film (4) coincides with the center of each diamond-shaped annular graphene film (3).
7. The microstrip antenna array with good isolation effect according to claim 1, wherein the circular arc graphene film (4) is 1/8 circular arc graphene film.
8. The microstrip antenna array with good isolation effect of claim 1, wherein four sides of the diamond-shaped annular graphene film (3) are equal and the length of a single side is not less than the width of a microstrip antenna unit radiator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011409833.5A CN112599986B (en) | 2020-12-04 | 2020-12-04 | Microstrip antenna array with good isolation effect |
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| CN202011409833.5A CN112599986B (en) | 2020-12-04 | 2020-12-04 | Microstrip antenna array with good isolation effect |
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| CN112599986B CN112599986B (en) | 2022-04-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725614A (en) * | 2021-06-30 | 2021-11-30 | 西安电子科技大学 | Decoupling structure for reducing isolation of horizontal omnidirectional antenna by adopting super surface |
| CN115693152A (en) * | 2022-12-30 | 2023-02-03 | 华南理工大学 | Antenna decoupling assembly and antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027378A1 (en) * | 2013-08-26 | 2015-03-05 | 华为技术有限公司 | Broadband dual-polarized array antenna and base station |
| CN110416746A (en) * | 2019-07-19 | 2019-11-05 | 深圳大学 | A kind of wideband millimeter wave antenna unit and aerial array |
| CN111834747A (en) * | 2020-07-20 | 2020-10-27 | 广州程星通信科技有限公司 | Patch antenna array and communication system |
| CN111883938A (en) * | 2020-07-31 | 2020-11-03 | 广州程星通信科技有限公司 | Single-feed-point array combined phased-array antenna |
-
2020
- 2020-12-04 CN CN202011409833.5A patent/CN112599986B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027378A1 (en) * | 2013-08-26 | 2015-03-05 | 华为技术有限公司 | Broadband dual-polarized array antenna and base station |
| CN110416746A (en) * | 2019-07-19 | 2019-11-05 | 深圳大学 | A kind of wideband millimeter wave antenna unit and aerial array |
| CN111834747A (en) * | 2020-07-20 | 2020-10-27 | 广州程星通信科技有限公司 | Patch antenna array and communication system |
| CN111883938A (en) * | 2020-07-31 | 2020-11-03 | 广州程星通信科技有限公司 | Single-feed-point array combined phased-array antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725614A (en) * | 2021-06-30 | 2021-11-30 | 西安电子科技大学 | Decoupling structure for reducing isolation of horizontal omnidirectional antenna by adopting super surface |
| CN115693152A (en) * | 2022-12-30 | 2023-02-03 | 华南理工大学 | Antenna decoupling assembly and antenna |
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| CN112599986B (en) | 2022-04-26 |
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