CN111817000A - Method for improving coupling performance of multi-antenna system by adopting heat dissipation hole structure - Google Patents
Method for improving coupling performance of multi-antenna system by adopting heat dissipation hole structure Download PDFInfo
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- CN111817000A CN111817000A CN202010644254.2A CN202010644254A CN111817000A CN 111817000 A CN111817000 A CN 111817000A CN 202010644254 A CN202010644254 A CN 202010644254A CN 111817000 A CN111817000 A CN 111817000A
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- hole structure
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- coupling performance
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method for improving the coupling performance of a multi-antenna system by adopting a heat dissipation hole structure, wherein each antenna unit of the multi-antenna system is respectively arranged at different positions on a dielectric substrate, and the method comprises the following steps: a plurality of radiating hole structures with special shapes are arranged on the dielectric substrate, and the radiating holes are arranged among the antenna units to improve the antenna coupling performance. Under the conditions that the physical space is limited and the adjacent antenna units have strong mutual coupling, the invention adopts the radiating hole structure with special shape to improve the coupling performance between the array antenna units, improve the isolation between the units and reduce the temperature of each element. By adjusting the distance, size, quantity and shape between the radiating holes and the distance between the structure and the antenna, the coupling between the units of the antenna system consisting of the multi-antenna units containing the radiating hole structure is reduced, the isolation is improved, the gain of the antenna array is improved, and the radiation efficiency is increased.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to a radiating hole structure for reducing the coupling of an antenna system consisting of multiple antenna units, improving the isolation between the antenna units and reducing the temperature of each element in wireless equipment.
Background
With the continuous development of society, people have more and more demands on communication, and in the application scene of a fifth generation mobile communication system (5G), the data transmission rate and the number of equipment access networks are both greatly increased, so that the frequency spectrum resources become more precious. Under such a background, a Multiple Input Multiple Output (MIMO) technology widely used in 4G is also becoming one of important technologies in 5G.
Multiple Input Multiple Output (MIMO) technology refers to the use of multiple antennas at the transmitting and receiving ends to transmit and receive signals simultaneously. Compared with a single transmitting antenna and a single receiving antenna, the multi-input multi-output technology can realize high-speed and large-capacity data transmission under the condition of not additionally increasing communication frequency bands and transmitting power, and remarkably improves the system data throughput rate and the channel capacity. In multiple-input multiple-output (MIMO) systems, antennas play a crucial role because their characteristics are inherently included in the communication channel between the transmitter and the receiver.
MIMO technology is based on antenna arrays, with increasing demand for channel capacity, massive MIMO technology will become the core of 5G systems, and compact dense arrays will facilitate this process. In the terminal device, since the space inside the device is limited and the number of antennas is increasing, the mutual coupling effect between the antenna units is increasing. The greater the number of antenna elements in a particular space, the stronger the coupling between the elements, which results in:
(1) an increase in spatial correlation;
(2) a decrease in radiation efficiency;
(3) a decrease in cell gain;
(4) degradation of signal-to-noise ratio;
(5) a reduction in channel capacity.
In summary, in a limited space, how to effectively reduce the coupling between antenna units in the MIMO system, improve the isolation between the units, and ensure the radiation performance of the original antenna has become a hot point of research in the industry. On the other hand, the number of components on the system mainboard is increased continuously, and if the heat generated by the components cannot be dissipated rapidly, the working effect of the components can be influenced, and the components can be burned to cause equipment paralysis. The heat dissipation of the device has a significant impact on its performance.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for improving the coupling performance between the antenna array units, increasing the isolation between the units, and reducing the temperature of each element by using a heat dissipation hole structure with a special shape under the conditions that the physical space is limited and the adjacent antenna units have strong mutual coupling.
The technical scheme of the invention is as follows:
a method for improving the coupling performance of a multi-antenna system by adopting a heat dissipation hole structure, wherein each antenna unit of the multi-antenna system is respectively arranged at different positions on a dielectric substrate, and the method comprises the following steps:
a plurality of radiating hole structures with special shapes are arranged on the dielectric substrate, and the radiating holes are arranged among the antenna units to improve the antenna coupling performance.
Preferably, the number of the radiating holes, the space and the size among the radiating holes and the space between the radiating holes and each antenna unit are adjusted, so that the coupling among the antenna units of the antenna system with the radiating hole structure is reduced, and the isolation is improved.
Preferably, the number of the radiating holes, the space and the size among the radiating holes and the space between the radiating holes and each antenna unit are adjusted, so that the gain of an antenna system with the radiating hole structure is improved, and the radiation efficiency is increased.
Preferably, the radiating hole structure adopts different numbers or shapes of radiating holes so as to adapt to the requirements of the actual antenna system.
Preferably, the shape of the heat dissipation hole structure is one of a circle, a polygon, a T shape and a cross shape.
Preferably, the dielectric substrate has different thicknesses and different dielectric constants according to actual requirements.
Preferably, the matching performance of the original multi-antenna system is adjusted, so that the antenna system is well matched after a radiating hole structure is loaded among the antenna units.
Preferably, the heat dissipation performance of the original multi-antenna system is improved, so that the temperature of system elements is reduced after the heat dissipation hole structure is loaded in the multi-antenna system.
The invention has the advantages that:
under the conditions that the physical space is limited and the adjacent antenna units have strong mutual coupling, the invention adopts the radiating hole structure with special shape to improve the coupling performance between the array antenna units, improve the isolation between the units and reduce the temperature of each element. Through spacing, size, quantity, shape and this structure and antenna interval to between each louvre adjust for: coupling among all units of an antenna system consisting of a plurality of antenna units with the heat dissipation hole structures is reduced, and isolation is improved; the gain of the antenna array consisting of the multiple antenna units with the heat dissipation hole structure is improved, and the radiation efficiency is increased.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic diagram of a linear array MIMO antenna system composed of two antenna units loaded with T-shaped heat dissipation hole structures according to the present invention;
fig. 2 is a schematic diagram of a linear array MIMO antenna system composed of two antenna units loaded with 8 pentagonal heat dissipation hole structures according to the present invention;
fig. 3 is a typical scattering parameter of a linear array MIMO antenna composed of two antenna units without loading a heat dissipation hole structure proposed in the embodiment of the present invention;
fig. 4 shows typical scattering parameters of a linear array MIMO antenna composed of two antenna units loaded with T-shaped heat dissipation hole structures according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The details are as follows:
fig. 1 is a linear array MIMO antenna system composed of two antenna units loaded with 6T-shaped hot hole structures. 101, 102 are two antenna units with close distance, a plurality of T-shaped heat dissipation hole structures 103 are loaded in the middle of the two antennas, and the quantity of the heat dissipation holes, the distance between each heat dissipation hole, the size, the distance between the structure and the antenna, the thickness of the main plate and the dielectric constant are adjusted, so that
(1) The coupling coefficient between the units of the antenna system loaded with the T-shaped heat dissipation hole structure is close to 0, and S21 is smaller than-20 dB;
(2) the gain of each antenna unit of the antenna system loaded with the T-shaped radiating hole structure is improved compared with the gain of each antenna unit of the antenna system not loaded with the T-shaped radiating hole structure.
The coupling performance improving method provided by the invention can select the parameters such as the shape, the number and the like of the heat dissipation holes according to the actual situation, so that the coupling effect between the two unit antennas is the lowest. Fig. 2 is an antenna array composed of two antenna units using 6 pentagonal louvre structures.
Fig. 3 shows scattering parameters of a two-unit MIMO antenna array without a T-shaped heat dissipation hole structure, and it can be seen from the figure that although reflection coefficients S11 and S22 of the antenna are both less than-15 dB in the operating frequency band, the coupling coefficient S21 between two antenna units is greater than-10 dB. In fig. 4, the coupling coefficient between the two antenna units is reduced to about-20 dB due to the introduction of the T-shaped heat dissipation hole structure.
The method for improving the coupling performance can be well applied to the MIMO communication system.
The above-described embodiments are merely exemplary and are not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (8)
1. A method for improving the coupling performance of a multi-antenna system by adopting a heat dissipation hole structure, wherein each antenna unit of the multi-antenna system is respectively arranged at different positions on a dielectric substrate, is characterized by comprising the following steps:
a plurality of radiating hole structures with special shapes are arranged on the dielectric substrate, and the radiating holes are arranged among the antenna units to improve the antenna coupling performance.
2. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
through the quantity of the radiating holes, the space and the size among the radiating holes and the adjustment of the space between the radiating holes and the antenna units, the coupling among the antenna units of the antenna system with the radiating hole structure is reduced, and the isolation is improved.
3. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
through the adjustment of the number of the radiating holes, the space and the size among the radiating holes and the space between the radiating holes and each antenna unit, the gain of an antenna system with the radiating hole structure is improved, and the radiation efficiency is increased.
4. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
the radiating hole structure adopts different numbers or shapes of radiating holes so as to adapt to the requirements of an actual antenna system.
5. The method of claim 4 for improving the coupling performance of a multiple antenna system using a louvre structure, wherein:
the shape of the heat dissipation hole structure is one of a circle, a polygon, a T shape and a cross shape.
6. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
the dielectric substrate adopts dielectric substrates with different thicknesses and different dielectric constants according to the requirements of actual conditions.
7. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
the matching performance of the original multi-antenna system is adjusted, so that the antenna system is well matched after a radiating hole structure is loaded among the antenna units.
8. The method of claim 1 for improving coupling performance of a multiple antenna system using a louvre structure, wherein:
the heat dissipation performance of the high multi-antenna system is improved, so that the temperature of system elements is reduced after the heat dissipation hole structure is loaded in the multi-antenna system.
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| CN202010644254.2A CN111817000B (en) | 2020-07-07 | 2020-07-07 | Method for improving coupling performance of multi-antenna system by adopting radiating hole structure |
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| CN202010644254.2A CN111817000B (en) | 2020-07-07 | 2020-07-07 | Method for improving coupling performance of multi-antenna system by adopting radiating hole structure |
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| CN111817000B CN111817000B (en) | 2023-06-16 |
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2020
- 2020-07-07 CN CN202010644254.2A patent/CN111817000B/en active Active
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