CN107645066B - Communication base station antenna for improving side lobe suppression - Google Patents
Communication base station antenna for improving side lobe suppression Download PDFInfo
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- CN107645066B CN107645066B CN201710659463.2A CN201710659463A CN107645066B CN 107645066 B CN107645066 B CN 107645066B CN 201710659463 A CN201710659463 A CN 201710659463A CN 107645066 B CN107645066 B CN 107645066B
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Abstract
The invention discloses a communication base station antenna for improving side lobe suppression, which comprises a reflecting plate, a vibrator array arranged on the reflecting plate and a phase shifter connected with the vibrator array, wherein the reflector is arranged on the reflector; the vibrator array is provided with a vibrator array group, and the vibrator array group is provided with a plurality of vibrator array units which are longitudinally arranged. The oscillator array unit is provided with six oscillators which are arranged in a 3X2 array shape, a signal feed-in part, a first power divider and a second power divider; the two vibrators in the middle row are connected with the signal feed-in part. The two vibrators in the left side row are connected with the first power divider. The two vibrators on the right side are connected with the second power divider. The first power divider and the second power divider are respectively connected with the signal feed-in part. According to the communication base station antenna for improving the side lobe suppression, signals are output through the vibrator array units which are arranged in the 3X2 array shape, and the output power of the corresponding vibrator is configured through the first power divider and the second power divider, so that the side lobe suppression effect is improved, and the radiation distance is further increased.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a communication base station antenna for improving side lobe suppression.
Background
Along with the continuous increase of the operating mileage of the high-speed rail, the technical difficulty of communication along the high-speed rail is brought. Because the operation speed of the high-speed railway is high, the existing communication base station antenna adopts 4-column vibrator arrangement, wherein 4-column vibrators are divided into two groups, and each group comprises two-column vibrators. The two rows of vibrators feed in signals through the phase shifter, and the power of each row of vibrators is the same. The beam side lobe suppression effect of the existing communication base station antennas is poor, so that the radiation distance is short, the number of the communication base station antennas needing to be configured on the same distance is large, and when the high-speed rail moves rapidly, the switching speed of the mobile terminal between different communication base station antennas is frequent, and the signal interruption of the mobile terminal is caused.
Disclosure of Invention
The invention aims to provide a communication base station antenna capable of improving side lobe suppression, aiming to improve the side lobe suppression effect and increase the radiation distance.
In order to achieve the purpose of the invention, the invention provides a communication base station antenna for improving the side lobe suppression, which comprises a reflecting plate, a vibrator array arranged on the reflecting plate and a phase shifter connected with the vibrator array; the vibrator array is provided with a vibrator array group, and the vibrator array group is provided with a plurality of vibrator array units which are longitudinally arranged. The oscillator array unit is provided with six oscillators which are arranged in a 3X2 array shape, a signal feed-in part, a first power divider and a second power divider; the two vibrators in the middle of the vibrator array unit are a first vibrator and a second vibrator from top to bottom respectively, and the first vibrator and the second vibrator are both connected with the signal feed-in part; the two vibrators in a row on the left side of the vibrator array unit are a third vibrator and a fourth vibrator from top to bottom, and the third vibrator and the fourth vibrator are connected with the first power divider; the two vibrators on the right side of the vibrator array unit are respectively a fifth vibrator and a sixth vibrator from top to bottom, the fifth vibrator and the sixth vibrator are both connected with the second power divider, and the first power divider and the second power divider are respectively connected with the signal feed-in part. The vibrator array group has five vibrator array units. The power distribution ratio of the five vibrator array units of the vibrator array group in the longitudinal direction is 3:7:10:7:3. The power distribution ratio of the first vibrator, the second vibrator, the third vibrator, the fourth vibrator, the fifth vibrator and the sixth vibrator of the vibrator array unit is 2:2:1:1:1:1.
As an improvement of the communication base station antenna for improving the side lobe suppression, the element array has two element array groups arranged in the left-right direction.
The communication base station antenna for improving the side lobe suppression outputs signals through the oscillator array units which are arranged in a 3X2 array shape, the power of the output signals of the third oscillator and the fourth oscillator is configured through the first power divider, and the power of the output signals of the fifth oscillator and the sixth oscillator is configured through the second power divider, so that the side lobe suppression effect is improved, the gain is increased, and the radiation distance is further increased.
Drawings
Fig. 1 is a front view of a communication base station antenna for improving side lobe suppression in accordance with the present invention;
Fig. 2 is a schematic diagram of element connection of a communication base station antenna for improving side lobe suppression according to the present invention;
Fig. 3 is a schematic connection diagram of a dipole array unit of a communication base station antenna for improving side lobe suppression according to the present invention;
fig. 4 is a beam pattern at 1710MHz of a communication base station antenna of the present invention for improved side lobe suppression;
fig. 5 is a beam pattern at 2170MHz for a communication base station antenna of the present invention with enhanced side lobe suppression.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following further details of the described technical solution of the present invention are described in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art may better understand the present invention and practice it, but the examples are not meant to limit the invention.
Referring to fig. 1 and 2, a preferred embodiment of the communication base station antenna for improving side lobe suppression according to the present invention is disclosed, in which the communication base station antenna for improving side lobe suppression includes a reflection plate 10, a dipole array 20 disposed on the reflection plate 10, and a phase shifter 30 connected to the dipole array 20. The reflecting plate 10 has a rectangular shape.
Referring to fig. 3, the transducer array 20 has a transducer array group 21. The transducer array group 21 has a plurality of transducer array units 210 arranged in the longitudinal direction. In the present embodiment, the vibrator array group 21 has five vibrator array elements 210.
The vibrator array unit 210 has six vibrators, a signal feed-in part 211, a first power divider 212 and a second power divider 213, and the six vibrators are arranged in a 3X2 array, i.e. the six vibrators are arranged in three rows in the transverse direction and two rows in the longitudinal direction. The two vibrators in the middle row are respectively defined as a first vibrator 214 and a second vibrator 215 from top to bottom, and the first vibrator 214 and the second vibrator 215 are connected with the signal feed-in part 211. The two vibrators in the left side row are respectively defined as a third vibrator 216 and a fourth vibrator 217 from top to bottom, and the third vibrator 216 and the fourth vibrator 217 are connected with the first power divider 212. The two vibrators on the right side are respectively defined as a fifth vibrator 218 and a sixth vibrator 219 from top to bottom, and the fifth vibrator 218 and the sixth vibrator 219 are connected with the second power divider 213.
The first power divider 212 and the second power divider 213 are connected to the signal feed 211, respectively, so that the power of the three-row vibrator can be configured by the first power divider 212 and the second power divider 213.
When the communication base station antenna for improving the side lobe suppression of the present invention works, the phase shifter 50 is connected to the signal feed-in part 211, and is used for outputting a signal with a certain power and a certain phase to the signal feed-in part 211. The signal feed unit 211 feeds the signals to the first oscillator 214, the second oscillator 215, the first power divider 212, and the second power divider 213, respectively. The signals fed to the first power divider 212 are fed to the third oscillator 216 and the fourth oscillator 217, respectively, so that the power of the output signals of the third oscillator 216 and the fourth oscillator 217 is configured. The signals fed to the second power divider 213 are fed to the fifth oscillator 218 and the sixth oscillator 219, respectively, so that the power of the output signals of the fifth oscillator 218 and the sixth oscillator 219 is configured.
Since the communication base station antenna for improving the side lobe suppression outputs signals through the oscillator array units 210 which are arranged in a 3X2 array shape, the power of the signals output by the third oscillator 216 and the fourth oscillator 217 is configured through the first power divider 212, and the power of the signals output by the fifth oscillator 218 and the sixth oscillator 219 is configured through the second power divider 213, the side lobe suppression effect is improved, the gain is increased, and the radiation distance is further increased.
In order to further improve the side lobe suppression effect, the vibrator array 20 has two vibrator array groups 21 arranged left and right, and the power distribution ratio of the five vibrator array units 210 of each vibrator array group 21 in the longitudinal direction is listed as 3:7:10:7:3, and the power distribution ratio of the first vibrator 214, the second vibrator 215, the third vibrator 216, the fourth vibrator 217, the fifth vibrator 218 and the sixth vibrator 219 of the vibrator array unit 210 is listed as 2:2:1:1:1:1.
Referring to fig. 4, a comparison diagram of a beam at 1710MHz of a communication base station antenna for improving side lobe suppression according to the present application and a conventional base station antenna is disclosed, where curve N is a beam curve according to the present application and curve P is a beam curve according to the conventional art. The comparison shows that the communication base station antenna for improving the side lobe suppression can obviously improve the suppression effect on the side lobe at 1710 MHz. Referring to fig. 5, a comparison diagram of a communication base station antenna for improving side lobe suppression according to the present application and a beam of a conventional base station antenna at 2170MHz is disclosed, wherein a curve N is a beam curve according to the present application, and a curve P is a beam curve according to the prior art. The comparison shows that the communication base station antenna for improving the side lobe suppression can obviously improve the side lobe suppression effect and gain when the communication base station antenna is at 2170 MHz.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (2)
1. A communication base station antenna for improving side lobe suppression comprises a reflecting plate, a vibrator array arranged on the reflecting plate and a phase shifter connected with the vibrator array; the vibrator array is provided with a vibrator array group, and the vibrator array group is provided with a plurality of vibrator array units which are longitudinally arranged;
The method is characterized in that: the oscillator array unit is provided with six oscillators which are arranged in a 3X2 array shape, a signal feed-in part, a first power divider and a second power divider; the two vibrators in the middle of the vibrator array unit are a first vibrator and a second vibrator from top to bottom respectively, and the first vibrator and the second vibrator are both connected with the signal feed-in part; the two vibrators in a row on the left side of the vibrator array unit are a third vibrator and a fourth vibrator from top to bottom, and the third vibrator and the fourth vibrator are connected with the first power divider; the two vibrators on the right side of the vibrator array unit are respectively a fifth vibrator and a sixth vibrator from top to bottom, the fifth vibrator and the sixth vibrator are both connected with the second power divider, and the first power divider and the second power divider are respectively connected with the signal feed-in part;
the vibrator array group is provided with five vibrator array units, and the power distribution ratio of the five vibrator array units of the vibrator array group in the longitudinal direction is 3:7:10:7:3;
the power distribution ratio of the first vibrator, the second vibrator, the third vibrator, the fourth vibrator, the fifth vibrator and the sixth vibrator of the vibrator array unit is 2:2:1:1:1:1.
2. The communication base station antenna for improving side lobe suppression of claim 1 wherein the element array has two element array groups arranged side to side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710659463.2A CN107645066B (en) | 2017-08-03 | 2017-08-03 | Communication base station antenna for improving side lobe suppression |
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| CN201710659463.2A CN107645066B (en) | 2017-08-03 | 2017-08-03 | Communication base station antenna for improving side lobe suppression |
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| CN107645066B true CN107645066B (en) | 2024-06-14 |
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