CN116885443A - Transmit-receive antenna array for wireless relay system - Google Patents
Transmit-receive antenna array for wireless relay system Download PDFInfo
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- CN116885443A CN116885443A CN202310923896.XA CN202310923896A CN116885443A CN 116885443 A CN116885443 A CN 116885443A CN 202310923896 A CN202310923896 A CN 202310923896A CN 116885443 A CN116885443 A CN 116885443A
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- antenna array
- relay system
- wireless relay
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- 238000003491 array Methods 0.000 claims abstract description 31
- 230000010287 polarization Effects 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000003786 synthesis reaction Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aerials With Secondary Devices (AREA)
- Radio Relay Systems (AREA)
Abstract
The application relates to a transceiver antenna array for a wireless relay system, comprising: a signal receiving antenna array and a signal transmitting antenna array; the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal; the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times the wavelength of the wave beam signal. The scheme realizes the orthogonal polarized beams with two independent directions, reduces the far field interference between the arrays, and can be applied to a wireless relay system.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a transceiver antenna array for a wireless relay system.
Background
In the future, new technologies such as the Internet of things, intelligent life, telemedicine and the like are oriented, and higher requirements are put forward on a wireless communication system. Because the low-frequency band spectrum resource is exhausted, the spread spectrum resource is the most effective method for improving the peak rate, so terahertz from millimeter waves of 5G to higher frequency bands becomes the main solution for meeting the peak rate of 6G. In the propagation of electromagnetic waves, a total reflection phenomenon occurs when an object with a volume larger than the own wavelength is encountered, and the loss of the short wave electromagnetic wave is larger when the short wave electromagnetic wave is transmitted in a medium. Thus, in engineering practice, signal relay systems are widely used. The signal relay system can make up blind for communication blind areas which cannot be covered by a base station or have large electromagnetic wave attenuation.
As population density and wireless devices increase, the capacity of wireless communications is urgently increased. The technologies such as tdma, cdma, sdma, etc. have not been able to meet future communication needs, and the polarization multiple access communication method has become an important way to increase the capacity.
However, the present inventors have found in the study that the main beam direction of the polarization direction of the existing polarized antenna array is not clearly distinguishable, so that it cannot be applied to a signal relay system requiring clear directivity. The existing bipolar receiving and transmitting antennas have stronger interference and limit the application of the existing bipolar receiving and transmitting antennas.
Disclosure of Invention
In view of the above problems, an object of the present application is to provide a transceiver antenna array for a wireless relay system, which realizes two-direction independent orthogonal polarized beams and reduces far field interference between arrays, and can be applied to the wireless relay system.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a transceiver antenna array for a wireless relay system, comprising: a signal receiving antenna array and a signal transmitting antenna array;
the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal;
the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times the wavelength of the wave beam signal.
In one implementation of the present application, the signal receiving antenna array and the signal transmitting antenna array are both four antenna unit arrays.
In one implementation of the present application, the antenna elements in the four-antenna element array are arranged periodically and continuously, and adjacent antenna elements are separated by 0.6 times the wavelength of the beam signal.
In one implementation of the application, the wireless relay system includes an energy loop feed network connecting the signal receiving antenna array and the signal transmitting antenna array.
In one implementation of the present application, the energy feedback network is formed by cascading two power division networks, wherein one power division network is used for power distribution and synthesis of the signal receiving antenna array, and the other power division network is used for power distribution and synthesis of the signal transmitting antenna array.
In one implementation of the present application, the power division network is a one-to-four power division network.
In one implementation of the present application, the wireless relay system further includes a metamaterial lens loaded on signal transmission paths of the signal receiving antenna array and the signal transmitting antenna array.
In one implementation of the application, the signal receiving antenna array and the signal transmitting antenna array are located at a focal position of the metamaterial lens.
In one implementation of the present application, the metamaterial lens is composed of periodically arranged metamaterial units, and each metamaterial unit is used for performing phase compensation on electromagnetic wave signals transmitted through the position.
In one implementation of the present application, the metamaterial units of the metamaterial lens are arranged in 61 units×125 units.
Due to the adoption of the technical scheme, the application has the following advantages: the transceiver antenna array for a wireless relay system in the present application includes: a signal receiving antenna array and a signal transmitting antenna array; the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal; the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times of the wavelength of the beam signals, so that the orthogonal polarized beams with two independent directions are realized, the far field interference between the arrays is reduced, and the method can be applied to a wireless relay system.
Drawings
Fig. 1 is a schematic diagram of a signal receiving antenna array and a signal transmitting antenna array according to an embodiment of the present application;
FIG. 2 is a simulated far field pattern at different spacings between arrays in accordance with an embodiment of the present application;
fig. 3 is a schematic diagram of an application scenario of a wireless relay system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an energy loop feed network of an embodiment of the present application;
FIG. 5 is a schematic diagram of a metamaterial lens in accordance with an embodiment of the present application;
fig. 6 is a far field pattern of an embodiment of the present application after loading a metamaterial lens.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the application, fall within the scope of protection of the application.
The polarized antenna array of the prior art cannot be applied to a signal relay system requiring definite directivity, and has the problem of stronger interference. The application correspondingly provides a receiving-transmitting antenna array for a wireless relay system, which comprises the following components: a signal receiving antenna array and a signal transmitting antenna array; the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal; the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times the wavelength of the wave beam signal. According to the scheme, the two direction independent orthogonal polarized beams are realized, and far field interference between arrays is reduced.
In the following, the technical solution of the present application is described in some detailed embodiments of the present application.
As shown in fig. 1, a transceiver antenna array for a wireless relay system includes: a signal receiving antenna array (array one) and a signal transmitting antenna array (array two).
Specifically, the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays (for example, four-unit antenna arrays), and polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal.
In fig. 1, two antennas of orthogonal polarization are placed on the same plane, wherein the polarization direction of the first array is 45 ° and the polarization direction of the second array is-45 °.
As shown in fig. 2, the spacing of the two co-planar arrays was found to have a greater effect on their far field during simulation, and not conventionally thought of as the greater the spacing, the less interference. When the distance between the two arrays is 7.5-34.5mm, the two arrays are excited simultaneously, different effects can be generated by far-field directional patterns, and when the distance between the two arrays is 7.5-13mm (0.65-1.13 wavelengths), side lobes can not appear; when the two arrays were spaced 17.25-34.5mm apart (1.5-3 wavelengths), distinct side lobes appeared. Therefore, when the array spacing between the two antenna arrays with orthogonal polarization is adjusted to be 0.65-1.13 signal wavelength, the far field interference between the antenna arrays can be effectively reduced.
Two arrays with an array pitch of 7.5-13mm are loaded with a metamaterial lens consisting of 61 x 125 units, the two arrays being located at two focal positions of the lens. The simulation schematic diagram is shown in fig. 6, when the distance between the two arrays is 7.5mm, the gain of the main lobe of the remote directional diagram after the lens is loaded is 18dBi, the gain of the side lobe is 10dBi, and the difference between the two gain lobes is 8dB; when the array spacing is 11.5mm (1 wavelength), the maximum gain of a main lobe of a far-field directional diagram after loading a lens is 19.5dBi, the gain of a side lobe is 7dBi, the gain difference of two lobes is 12.5dB, and the zero gain between the two main lobes is about 9.5 dBi; when the array pitch is 13mm (1.13 wavelengths), the main lobe gain is 19.6dBi, the side lobe gain is 8dBi, the two lobe gain difference is 11.6dB, and the zero point gain between the two main lobes is about 9.5 dBi. It follows that the antennas of orthogonal polarization will also interact with each other in the far field when excited simultaneously, and that the far field will produce a side lobe only lower than the main lobe gain when the distance is incorrect. Whether or not a lens is loaded, the spacing of the two arrays should be kept around 1 wavelength to produce two high gain beams that are polarization independent, spatially directivity independent and without side lobes.
In fig. 3, an application scenario of a wireless relay system (specifically named "supertransparent relay" channel enhancement system) is illustrated, which is composed of two four-element (antenna) arrays, an energy loop feed network, and a metamaterial lens.
More specifically, the two four-unit arrays are positioned on the same plane, and the array interval is 1.13 wavelengths; the array I radiates a fixed wave beam pointing to the base station and is used for receiving signals sent by the base station; the array is directed to a user and has beam scanning capability for "forwarding" received base station signals to the user.
An energy loop feed network for signal transfer between the two arrays, and power distribution and power synthesis of energy.
The metamaterial lens is composed of metamaterial units capable of regulating and controlling the phase of electromagnetic waves and is used for focusing the electromagnetic waves.
Referring to the application scenario of fig. 3, assuming that the base station antenna is mounted on a tower with a height of 15m, the "super-transparent relay" system is fixed on the wall of the first building, the first array generates beams directed to the base station, and the second array generates beams directed to users whose base station coverage is not complete (signals are blocked by the second building).
The array element distance of the two orthogonal polarization receiving and transmitting arrays is 0.6 wavelength, and the array distance is 1.13 wavelength.
Referring to fig. 4, the energy feedback network is formed by cascading two one-to-four power division networks, wherein the fixed power division network one is responsible for power distribution and power synthesis of the array one, and the adjustable power division network two is responsible for power distribution and power synthesis of the array two, so as to adjust beam direction of the array two. The two arrays exchange energy through the loop feed network to complete signal receiving and forwarding.
As shown in fig. 5, a metamaterial lens is schematically shown, and the lens is formed by periodically arranged metamaterial units, and each metamaterial unit can perform phase compensation on electromagnetic waves at the position. In one embodiment of the present application, the metamaterial lenses may be arranged in 61 cells by 125 cells.
The wireless relay system realizes a relay system with low cost, low time overhead and low complexity, and performs blind compensation on communication blind areas which cannot be covered by a base station or have large electromagnetic wave attenuation and the like.
In summary, the transceiver antenna array for a wireless relay system according to the present application includes: a signal receiving antenna array and a signal transmitting antenna array; the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal; the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times of the wavelength of the beam signals, so that the orthogonal polarized beams with two independent directions are realized, the far field interference between the arrays is reduced, and the method can be applied to a wireless relay system.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (10)
1. A transceiver antenna array for a wireless relay system, comprising: a signal receiving antenna array and a signal transmitting antenna array;
the signal receiving antenna array and the signal transmitting antenna array are coplanar multi-unit arrays, and the polarization directions of the signal receiving antenna array and the signal transmitting antenna array are orthogonal;
the array spacing between the signal receiving antenna array and the signal transmitting antenna array is 0.65-1.13 times the wavelength of the wave beam signal.
2. The transceiver antenna array for a wireless relay system of claim 1, wherein said signal receiving antenna array and said signal transmitting antenna array are each a four antenna element array.
3. The transceiver antenna array for a wireless relay system of claim 2, wherein the antenna elements in the four antenna element array are arranged in a periodic succession with adjacent antenna elements being separated by 0.6 times the wavelength of the beam signal.
4. The transceiver antenna array for a wireless relay system of claim 1, wherein the wireless relay system comprises an energy loop feed network connecting the signal receiving antenna array and the signal transmitting antenna array.
5. The transceiver antenna array for a wireless relay system of claim 4, wherein the energy loop feed network is formed by cascading two power division networks, one of which is used for power distribution and synthesis of the signal receiving antenna array, and the other of which is used for power distribution and synthesis of the signal transmitting antenna array.
6. The transceiver antenna array for a wireless relay system of claim 5, wherein said power division network is a one-quarter power division network.
7. The transceiver antenna array for a wireless relay system of claim 1, wherein said wireless relay system further comprises a metamaterial lens loaded on signal transmission paths of said signal receiving antenna array and said signal transmitting antenna array.
8. The transceiver antenna array for a wireless relay system of claim 7, wherein said signal receiving antenna array and said signal transmitting antenna array are located at a focal position of said metamaterial lens.
9. The transceiver antenna array for a wireless relay system of claim 8, wherein the metamaterial lens is comprised of periodically arranged metamaterial units, each metamaterial unit for phase compensating electromagnetic wave signals transmitted at the location.
10. The transceiver antenna array for a wireless relay system of claim 9, wherein the metamaterial units of the metamaterial lens are arranged in a 61 unit x 125 unit manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923896.XA CN116885443A (en) | 2023-07-26 | 2023-07-26 | Transmit-receive antenna array for wireless relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923896.XA CN116885443A (en) | 2023-07-26 | 2023-07-26 | Transmit-receive antenna array for wireless relay system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116885443A true CN116885443A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310923896.XA Pending CN116885443A (en) | 2023-07-26 | 2023-07-26 | Transmit-receive antenna array for wireless relay system |
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| Country | Link |
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| CN (1) | CN116885443A (en) |
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2023
- 2023-07-26 CN CN202310923896.XA patent/CN116885443A/en active Pending
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