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A Broadband Array Antenna

An array antenna and array technology, which is applied in the direction of antenna, antenna grounding switch structure connection, combination of antenna units with different polarization directions, etc., can solve the problem of limited system communication capacity improvement, affecting the transmission rate of communication system, and large overlapping area of ​​adjacent cells. and other problems, to achieve the effect of reducing operation and maintenance costs, reducing the number of antennas, and fast beam convergence capability.

Active Publication Date: 2021-06-18
GUANGDONG BROADRADIO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the system using this antenna, the overlapping area of ​​adjacent cells is large, and the interference is large, which seriously affects the transmission rate of the communication system, and the improvement of the communication capacity of the system is limited.

Method used

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  • A Broadband Array Antenna
  • A Broadband Array Antenna
  • A Broadband Array Antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 2 with 3 As shown, a wide-band array antenna provided by an embodiment of the present invention includes a metal reflector, a horizontal power distribution network installed on the metal reflector, an oscillator fixed on the horizontal power distribution network, and a vertical power division phase shifting network.

[0030] The radiating element array includes at least one sub-array in the horizontal direction, and each sub-array includes a plurality of oscillators arranged in the horizontal direction;

[0031] The horizontal plane pattern of the broadband array antenna is rectangular, the amplitude is stable within 3dB of the main beam direction and has at least 2 peaks, and the power drops rapidly outside the main beam range, and the 3dB to 20dB power drop angle is less than 25 degrees.

[0032] Preferably, the radiating element array is composed of 25 dual-polarized oscillators 101, the 25 oscillators are divided into 5 sub-arrays, and each sub-arr...

Embodiment 2

[0036] Such as Figure 5 As shown, the embodiment of the present invention is changed on the basis of the first embodiment.

[0037] The embodiment of the present invention provides a dual-band rectangular shaped antenna working at 1710-2200 MHz and 2300-2700 MHz. 111, 112 and 113 are respectively ±45 dual-polarized oscillator units operating in the 2300-2700MHz frequency band, a horizontal power distribution network, and a vertical power division phase-shifting network to form a 2300-2700MHz frequency band subsystem; the oscillator and feeder The connection of the network is the same as that in the first embodiment; the horizontal spacing of the oscillators is D1H, and the vertical spacing is D1V. 211, 212 and 213 are respectively ±45 dual-polarized oscillator units operating in the 1710-2200MHz frequency band, a horizontal power distribution network, and a vertical power division phase-shifting network to form a 1710-2200MHz frequency band subsystem; the oscillator and feed...

Embodiment 3

[0043] Such as Image 6 As shown, the embodiment of the present invention provides a three-band array antenna.

[0044] 116 in the figure is the dual-band antenna of the second embodiment, and the working frequency bands are 1710-2200 and 2300-2700 MHz respectively. 311, 312 and 313 are ±45 dual-polarization oscillators working in the 698-960MHz frequency band, horizontal power distribution network and vertical power division phase shifter network. The connection between the dual-polarization dipoles and the feed network is the same as in the first embodiment; the horizontal distance between the dipoles is D3H, and the vertical distance is D3V. The +45 polarization signal F3 of the 698-960MHz subsystem and the +45 polarization signal F1 of the 1710-2200 / 2300-2700MHz dual-band system are connected to the combiner 107 to form a shared output port G1; similarly, the The -45 polarization signal F4 of the 698-960MHz subsystem and the -45 polarization signal F2 of the 1710-2200 / 23...

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Abstract

The invention relates to a wide-band array antenna, which includes a metal reflector, a radiation element array, and a feed network installed on the metal reflector; the radiation element array includes subsystems of different frequency bands, and each subsystem has five oscillators in the horizontal direction Connected to the horizontal power distribution network. The wide-band array antenna has fast beam convergence ability in the horizontal direction, the 3dB to 20dB power drop angle is less than 25 degrees, and the sidelobe level suppression is better than 20dB. The structure of the array antenna is flexible, and parameters such as spacing, amplitude and phase can be flexibly configured according to actual application requirements. By adopting the structure of the invention, the interference of neighboring cells in hotspot areas such as venues can be reduced, the frequency reuse of adjacent cells can be realized, and the network capacity can be improved. The array antenna of the present invention is compatible with multiple standards of 2G, 3G and 4G LTE in mobile communication, which can not only reduce the number of antennas used by base stations, reduce station deployment costs, but also reduce operation and maintenance costs.

Description

technical field [0001] The invention relates to the communication field, in particular to a broadband array antenna. Background technique [0002] After the fourth-generation mobile communication technology 4G / LTE was commercialized on a large scale, the mobile Internet developed rapidly, smart phones and tablet computers became more and more popular, and the data traffic of mobile communication showed explosive growth. Hotspot areas with dense mobile communication users, including large stadiums, performing arts centers, exhibition centers, high-speed rail stations, terminal buildings, and citizen squares, etc., the existing mobile communication network has been difficult to meet the high-speed real-time network traffic demand, and the traditional increase of carrier It is also difficult to solve the problem of network capacity in high data traffic areas with technical solutions such as . [0003] Open venues have a high density of people, high traffic volume, and limited ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q5/20H01Q21/24H01Q1/50
CPCH01Q1/50H01Q21/24
Inventor 吴泽海吴壁群苏振华叶亮华
Owner GUANGDONG BROADRADIO COMM TECH
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