CN111564688A - High-gain multi-port base station antenna based on four-column low frequency - Google Patents
High-gain multi-port base station antenna based on four-column low frequency Download PDFInfo
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- CN111564688A CN111564688A CN202010549849.XA CN202010549849A CN111564688A CN 111564688 A CN111564688 A CN 111564688A CN 202010549849 A CN202010549849 A CN 202010549849A CN 111564688 A CN111564688 A CN 111564688A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/005—Damping of vibrations; Means for reducing wind-induced forces
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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
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Abstract
The invention belongs to the technical field of base station antennas, and particularly relates to a high-gain multiport base station antenna based on four rows of low frequencies, which comprises a bottom plate, wherein two long edges of the bottom plate are respectively provided with a first reflecting plate and a second reflecting plate, four groups of low-frequency radiation arrays are arranged on the bottom plate, the low-frequency radiation arrays comprise a first low-frequency radiation array, a second low-frequency radiation array, a third low-frequency radiation array and a fourth low-frequency radiation array which are sequentially arranged from the first reflecting plate to the second reflecting plate, and the first low-frequency radiation array, the second low-frequency radiation array, the third low-frequency radiation array and the fourth low-frequency radiation array respectively comprise a first low-frequency oscillator, a second low-frequency oscillator; the first low-frequency oscillator and the second low-frequency oscillator are arranged in a staggered mode and are aligned with the third low-frequency oscillator, and the second low-frequency oscillator and the fourth low-frequency oscillator are aligned with each other. The low-frequency oscillators of the adjacent low-frequency radiation arrays of the base station antenna are arranged in a staggered mode, so that the size of the antenna can be effectively reduced, the wind resistance performance is good, the installation is convenient, and the gain and the convergence of the antenna are good.
Description
Technical Field
The invention belongs to the technical field of base station antennas, and particularly relates to a high-gain multi-port base station antenna based on four-column low frequency.
Background
With the rapid development of mobile communication systems, the complexity of the systems is higher and higher, and the antennas as important components face serious examination. In recent years, multiple network systems of 2G, 3G and 4G coexist and share a station, so that the resource of the station is increasingly tense, and particularly in cities, no redundant resource of the station is available. In addition, with the continuous construction and upgrading of high-speed rail networks and the need of signal coverage in special scenes (long and narrow sections such as roads), the requirements for communication quality are also higher and higher. Present narrow beam size is bigger than normal, is unfavorable for transportation and installation, and the wind load is big, influences safety, and current narrow beam antenna radiation performance is relatively poor, so need select a miniaturization, the narrow beam antenna that radiation performance is good replaces to reduce the weight of antenna, reduce the area of facing the wind, it is safe in utilization, improve communication quality simultaneously.
Disclosure of Invention
In order to solve the problems, the invention discloses a high-gain multiport base station antenna based on four low frequencies, which comprises four groups of low-frequency radiation arrays, wherein low-frequency oscillators of adjacent low-frequency radiation arrays are arranged in a staggered manner, so that the size of the antenna can be effectively reduced, the wind resistance is good, the installation is convenient, and the gain and the convergence of the antenna are good.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-gain multiport base station antenna based on four rows of low frequencies comprises a bottom plate, wherein a first reflecting plate and a second reflecting plate are arranged on two long edges of the bottom plate respectively, a third reflecting plate and a fourth reflecting plate are arranged on two short edges of the bottom plate respectively, four groups of low-frequency radiation arrays are arranged on the bottom plate and comprise a first low-frequency radiation array, a second low-frequency radiation array, a third low-frequency radiation array and a fourth low-frequency radiation array which are sequentially arranged from the first reflecting plate to the second reflecting plate, and the first low-frequency radiation array, the second low-frequency radiation array, the third low-frequency radiation array and the fourth low-frequency radiation array respectively comprise a first low-frequency oscillator, a second low-frequency oscillator, a third low-frequency oscillator and a fourth low-frequency; the first low-frequency oscillator and the second low-frequency oscillator are arranged in a staggered mode and are arranged in an aligned mode with the third low-frequency oscillator, and the second low-frequency oscillator and the fourth low-frequency oscillator are arranged in an aligned mode.
Preferably, the number of the first low-frequency oscillator, the number of the second low-frequency oscillator, the number of the third low-frequency oscillator, and the number of the fourth low-frequency oscillator are 4 to 11.
Preferably, the first low-frequency oscillator, the second low-frequency oscillator, the third low-frequency oscillator and the fourth low-frequency oscillator are all cross-shaped aluminum alloy die-cast oscillators.
Preferably, the base station antenna covers the low frequency band 690-960 MHz.
Preferably, the first low-frequency radiating array and the third low-frequency radiating array have a spacing of L1, and the four low-frequency radiating arrays have equal spacing of L1/2.
Preferably, the two low-frequency oscillators are located on the symmetry axis of the first two adjacent low-frequency oscillators.
Preferably, a first isolating strip is arranged between the second low-frequency oscillators, and a second isolating strip is arranged between the third low-frequency oscillators; the first isolating bars and the second isolating bars are equal in height and are both h 1.
Preferably, the heights of the first reflecting plate, the second reflecting plate, the third reflecting plate and the fourth reflecting plate are all equal to h 2.
Preferably, the pitch of the first low-frequency oscillator, the pitch of the second low-frequency oscillator, the pitch of the third low-frequency oscillator, and the pitch of the fourth low-frequency oscillator are all equal to L2.
Preferably, the center frequencies of the four groups of low-frequency radiation arrays are f1, the h1 is the wavelength of 0.08-0.15 times of f1, the h2 is the wavelength of 0.05-0.2 times of f1, the L1 is the wavelength of 0.6-0.75 times of f1, and the L2 is the wavelength of 0.5-1 times of f 1;
the width of the bottom plate is W, and W is 1.3-1.7 times the wavelength of f 1.
The invention has the following beneficial effects:
(1) the base station antenna comprises four groups of low-frequency radiating arrays, and the low-frequency oscillators of the adjacent low-frequency radiating arrays are arranged in a staggered manner, so that the size of the antenna can be effectively reduced, the structure is reliable, the wind resistance is good, and the transportation and the arrival at a station are facilitated;
(2) the low-frequency oscillators of the adjacent low-frequency radiation arrays of the base station antenna are arranged in a staggered mode, so that the mutual influence of the low-frequency oscillators can be effectively reduced, the radiation performance is good, and the antenna has high gain and good convergence;
(3) and a first isolating strip and a second isolating strip are arranged between the second low-frequency oscillator and the third low-frequency oscillator, so that the horizontal beam width can be converged, and the front-to-back ratio can be improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of a base station antenna of the present invention;
FIG. 2 is a front view of a base station antenna of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a diagram of a typical 825MHz vertical pattern of the base station antenna 690 and 960MHz band;
FIG. 5 is a diagram of a typical 825MHz horizontal plane pattern of a base station antenna 690 and a 960MHz band;
in the figure: 1. a base plate; 11. a first reflecting plate; 12. a second reflecting plate; 13. a third reflecting plate; 14. a fourth reflecting plate; 21. a first low-frequency oscillator; 22. a second low-frequency oscillator; 23. a low-frequency oscillator III; 24. a low-frequency oscillator IV; 31. a first isolating strip; 32. and a second isolating strip.
Detailed Description
The present invention will now be described in further detail with reference to examples.
A high-gain multiport base station antenna based on four-row low frequency, as shown in fig. 1-2, includes a bottom plate 1, two long edges of the bottom plate 1 are respectively provided with a first reflecting plate 11 and a second reflecting plate 12, two short edges of the bottom plate 1 are respectively provided with a third reflecting plate 13 and a fourth reflecting plate 14, and is characterized in that: four groups of low-frequency radiation arrays are arranged on the bottom plate 1 and comprise a first low-frequency radiation array, a second low-frequency radiation array, a third low-frequency radiation array and a fourth low-frequency radiation array which are sequentially arranged from the first reflecting plate 11 to the second reflecting plate 12, wherein the first low-frequency radiation array, the second low-frequency radiation array, the third low-frequency radiation array and the fourth low-frequency radiation array respectively comprise a plurality of first low-frequency oscillators 21, a second low-frequency oscillator 22, a third low-frequency oscillator 23 and a fourth low-frequency oscillator 24 which are arrayed in a straight line; the first low-frequency oscillator 21 and the second low-frequency oscillator 22 are arranged in a staggered mode and aligned with the third low-frequency oscillator 23, and the second low-frequency oscillator 22 and the fourth low-frequency oscillator 24 are arranged in an aligned mode. The low-frequency oscillators of the adjacent low-frequency radiation arrays are arranged in a staggered manner, so that the size of the antenna can be effectively reduced, the structure is reliable, the wind resistance is good, and the transportation and the standing are facilitated; meanwhile, the low-frequency oscillators are arranged in a staggered mode, the mutual influence of the low-frequency oscillators can be effectively reduced, the radiation performance is good, and the antenna is high in gain and good in convergence.
In a specific embodiment, 4 to 11 low-frequency oscillators are respectively arranged in the first low-frequency oscillator 21, the second low-frequency oscillator 22, the third low-frequency oscillator 23 and the fourth low-frequency oscillator 24.
In a specific embodiment, as shown in fig. 1-2, the first low-frequency oscillator 21, the second low-frequency oscillator 22, the third low-frequency oscillator 23 and the fourth low-frequency oscillator 24 are all aluminum alloy die-cast oscillators in a cross shape. As shown in fig. 2, the aluminum alloy die-cast oscillators in the form of a cross can be arranged in an interpenetration manner, so that the size of the antenna is reduced to the maximum extent while the performance of the antenna is ensured.
In one embodiment, the base station antenna covers the low frequency band 690-.
In a specific embodiment, as shown in fig. 2, the first low frequency radiating array and the third low frequency radiating array are spaced at a distance L1, and the four low frequency radiating arrays are all equally spaced at a distance L1/2.
In a specific embodiment, as shown in fig. 2, the second low frequency oscillator 22 is located on the symmetry axis of the first low frequency oscillator 21.
In a specific embodiment, as shown in fig. 1-2, a first isolation strip 31 is arranged between the second low-frequency oscillators 22, and a second isolation strip 32 is arranged between the third low-frequency oscillators 23; the first spacing bars 31 and the second spacing bars 32 are equal in height and are h 1. The arrangement of the first isolation strip 31 and the second isolation strip 32 is beneficial to converging the horizontal beam width and improving the front-to-back ratio.
In a specific embodiment, as shown in fig. 3, the heights of the first reflecting plate 11, the second reflecting plate 12, the third reflecting plate 13 and the fourth reflecting plate 14 are equal and are all h 2.
In a specific embodiment, as shown in fig. 2, the pitch of the first low-frequency oscillator 21, the pitch of the second low-frequency oscillator 22, the pitch of the third low-frequency oscillator 23, and the pitch of the fourth low-frequency oscillator 24 are all equal to L2.
In one specific embodiment, as shown in fig. 2-3, the center frequencies of the four groups of low-frequency radiation arrays are all f1, h1 is 0.08-0.15 times the wavelength of f1, h2 is 0.05-0.2 times the wavelength of f1, L1 is 0.6-0.75 times the wavelength of f1, and L2 is 0.5-1 times the wavelength of f 1; the width of the base plate 1 is W, which is 1.3-1.7 wavelengths of f 1.
As can be seen from fig. 4-5, the directional diagram index has excellent sidelobe suppression in the vertical plane, convergence in the horizontal plane and horizontal beam, and good front-to-back ratio.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A high-gain multiport base station antenna based on four-column low frequency comprises a base plate (1), wherein a first reflecting plate (11) and a second reflecting plate (12) are respectively arranged on two long edges of the base plate (1), and a third reflecting plate (13) and a fourth reflecting plate (14) are respectively arranged on two short edges of the base plate (1), and the high-gain multiport base station antenna is characterized in that: the bottom plate (1) is provided with four groups of low-frequency radiation arrays, including a first low-frequency radiation array, a second low-frequency radiation array, a third low-frequency radiation array and a fourth low-frequency radiation array which are sequentially arranged from the first reflecting plate (11) to the second reflecting plate (12), wherein the first low-frequency radiation array, the second low-frequency radiation array, the third low-frequency radiation array and the fourth low-frequency radiation array respectively comprise a plurality of first low-frequency oscillators (21), second low-frequency oscillators (22), third low-frequency oscillators (23) and fourth low-frequency oscillators (24) which are arrayed in a straight line; the low-frequency oscillator I (21) and the low-frequency oscillator II (22) are arranged in a staggered mode and aligned with the low-frequency oscillator III (23), and the low-frequency oscillator II (22) and the low-frequency oscillator IV (24) are aligned.
2. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: 4-11 low-frequency oscillators are arranged in the first low-frequency oscillator (21), the second low-frequency oscillator (22), the third low-frequency oscillator (23) and the fourth low-frequency oscillator (24) respectively.
3. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the low-frequency oscillator I (21), the low-frequency oscillator II (22), the low-frequency oscillator III (23) and the low-frequency oscillator IV (24) are all cross-shaped aluminum alloy die-casting oscillators.
4. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the base station antenna covers the low frequency band 690-960 MHz.
5. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the distance between the first low-frequency radiation array and the third low-frequency radiation array is L1, and the distances between the four groups of low-frequency radiation arrays are equal and are L1/2.
6. The four-column low frequency based high gain multi-port base station antenna of claim 5, wherein: the second low-frequency oscillator (22) is positioned on the symmetry axis of the first two adjacent low-frequency oscillators (21).
7. The four-column low frequency based high gain multi-port base station antenna of claim 6, wherein: a first isolating strip (31) is arranged between the second low-frequency vibrators (22), and a second isolating strip (32) is arranged between the third low-frequency vibrators (23); the first isolating bars (31) and the second isolating bars (32) are equal in height and are h 1.
8. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the heights of the first reflecting plate (11), the second reflecting plate (12), the third reflecting plate (13) and the fourth reflecting plate (14) are equal and are all h 2.
9. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the distance between the first low-frequency vibrators (21), the distance between the second low-frequency vibrators (22), the distance between the third low-frequency vibrators (23) and the distance between the fourth low-frequency vibrators (24) are equal to L2.
10. The four column low frequency based high gain multi-port base station antenna of claim 1, wherein: the center frequencies of the four groups of low-frequency radiation arrays are f1, the h1 is the wavelength of 0.08-0.15 times of f1, the h2 is the wavelength of 0.05-0.2 times of f1, the L1 is the wavelength of 0.6-0.75 times of f1, and the L2 is the wavelength of 0.5-1 times of f 1;
the width of the bottom plate (1) is W, and W is 1.3-1.7 times the wavelength of f 1.
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| CN202010549849.XA CN111564688A (en) | 2020-06-16 | 2020-06-16 | High-gain multi-port base station antenna based on four-column low frequency |
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| CN202010549849.XA CN111564688A (en) | 2020-06-16 | 2020-06-16 | High-gain multi-port base station antenna based on four-column low frequency |
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Application publication date: 20200821 |
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