Multi-frequency band array antenna

An array antenna and multi-band technology, applied in the field of communication, can solve the problems that it is difficult to meet the application requirements of 700MHz LTE, it is difficult to expand the 700MHz frequency band, and the dual-band antenna has a large windward area, so as to reduce operation and maintenance costs, reduce the number of antennas, and have a compact structure Effect

Active Publication Date: 2014-02-05
GUANGDONG BROADRADIO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to weaken the coupling between high and low frequency radiating elements, the distance between them should not be too small, resulting in a large windward area of ​​the dual-frequency antenna
[0005] In additi

Method used

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Examples

Experimental program
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Example Embodiment

[0032] Example one

[0033] Such as Figure 2 to Figure 4 As shown, the embodiment of the present invention provides a compact dual-band array antenna, including a metal reflector, and a low frequency radiating unit 1 that works in a lower frequency band and a high frequency radiation unit 1 that is installed on the metal reflector and works in a higher frequency band. Frequency radiation unit 2. Preferably, the low-frequency radiation unit 1 operates in a frequency range of 698-960 MHz, and the high-frequency radiation unit 2 operates in a frequency range of 1710-2690 MHz.

[0034] The low-frequency radiation unit 1 includes a horizontal vibrator 101 and a vertical vibrator 102 orthogonal to each other. The horizontal vibrator 101 and the vertical vibrator 102 are connected to a feed network to generate ±45 degree polarization or vertical and horizontal polarization far-field radiation directions Figure. Wherein, there are two vertical vibrators 102, which are respectively inst...

Example Embodiment

[0043] Example two

[0044] Such as Figure 5 As shown, the embodiment of the present invention is changed on the basis of Embodiment 1, and provides a 3-band array antenna. Specifically, the multiple high-frequency radiation units 2 in a full-column high-frequency array in the embodiment of the present invention respectively belong to two independent high-frequency systems. In other words, the embodiment of the present invention has two independent high-frequency systems, which are Figure 5 In the part selected by the two rectangular boxes, the two high-frequency systems can work in different frequency bands or the same frequency band, and jointly cover the 1710-2690MHz frequency band; plus another coaxial low-frequency system, covering 698 ~960MHz frequency band; constitutes a 3-band array antenna in which one low-frequency system and two high-frequency systems coexist.

[0045] The other features in the embodiment of the present invention are the same as those in the first emb...

Example Embodiment

[0046] Example three

[0047] Such as Image 6 As shown, the embodiment of the present invention provides a 4-band array antenna, which includes two columns of low frequency arrays and two columns of high frequency arrays. The two rows of low-frequency arrays are formed by a plurality of low-frequency radiation units 1 arranged along two mutually parallel axes; each row of low-frequency arrays is also arranged on the axis of a row of high-frequency arrays. Among them, each column of high-frequency array belongs to an independent high-frequency system, respectively, such as Image 6 In the part selected by the two rectangular boxes, the two high-frequency systems can work in different frequency bands or the same frequency band, and jointly cover the 1710-2690MHz frequency band; each column of low-frequency arrays is also subordinate to an independent low-frequency system The two low-frequency systems can work in different frequency bands, or in the same frequency band, and jointly...

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Abstract

The invention relates to a multi-frequency band array antenna which comprises a metal baffle board, low-frequency radiating elements and high-frequency radiating elements, wherein the low-frequency radiating elements and the high-frequency radiating elements are mounted on the metal baffle board, the low-frequency radiating elements operate at a low frequency band, and the high-frequency radiating elements operate at a high frequency band; the low-frequency radiating elements and the high-frequency radiating elements are arranged on the metal baffle board in a nested mode, and the orthographic projection of the low-frequency radiating elements does not coincide with that of the high-frequency radiating elements. Each low-frequency radiating element is composed of a horizontal oscillator and a pair of vertical oscillators connected with a feed network. The low-frequency radiating elements are flexible in structure, and the distance and other parameters can be configured flexibly according to actual application requirements. By the adoption of the structure of the multi-frequency band array antenna, the stability of radiation characteristics of the multi-frequency band array antenna within the range of an ultra-wide band can be maintained, and the multi-frequency band array antenna is compatible with multiple systems in mobile communication including 2G, 3G and 4G LTE; the number of antennae for a base station and station distribution cost can be reduced, and operation and maintenance cost also can be reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a multi-band array antenna. Background technique [0002] Today, 2G, 3G and the upcoming 4G LTE network coexist, and multiple systems using different frequency bands exist at the same time, requiring the use of base station antennas that can work in different frequency bands. Using ordinary narrow-band antennas, a base station needs to arrange many sub-antennas, which increases system complexity and property costs. In order to reduce the cost of network construction, broadband and miniaturization of antennas have become one of the current hot spots. [0003] In order to be compatible with multiple communication systems, dual-frequency dual-polarized antennas have been used on a large scale. Traditional dual-band antennas often adopt a structure in which high-frequency radiation units and low-frequency radiation units are side by side (Side by Side). The Australian patent application w...

Claims

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Application Information

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IPC IPC(8): H01Q21/30H01Q19/10
Inventor 吴壁群
Owner GUANGDONG BROADRADIO COMM TECH
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