Ultra-wide frequency band multi-band array antenna

An array antenna and ultra-wideband technology, which is applied in the field of ultra-wideband multi-band array antennas, can solve the problems of increasing cost, production difficulty, and reducing antenna gain, so as to reduce operation and maintenance costs, reduce the number of antennas, and have a simple and compact structure Effect

Active Publication Date: 2015-01-07
GUANGDONG BROADRADIO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure not only increases the cost and production difficulty,

Method used

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  • Ultra-wide frequency band multi-band array antenna
  • Ultra-wide frequency band multi-band array antenna
  • Ultra-wide frequency band multi-band array antenna

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example one

[0032] Such as Figure 2 to Figure 4 As shown, an ultra-wideband three-band array antenna provided by an embodiment of the present invention includes 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 works in a higher frequency band installed on the metal reflector. Frequency radiation unit 2. Preferably, the low-frequency radiation unit 1 operates in a frequency range of 694-960 MHz, and the high-frequency radiation unit 2 operates in a frequency range of 1710-2690 MHz.

[0033] The low-frequency radiating unit 1 includes two low-frequency vibrators which are polarized at ±45 degrees and installed orthogonally to each other, which are the positive-polarized low-frequency vibrator 101 and the negative-polarized low-frequency vibrator 102 respectively. The two low-frequency vibrators are connected to the feed network to generate ± 45-degree polarized far-field radiation patte...

Example Embodiment

[0041] Example two

[0042] In a multi-band array antenna, reducing the overlap of the orthographic projection of each frequency band antenna on the metal reflector, or even making them non-overlapping each other, can effectively reduce the electrical interference between the antennas of each frequency band. In the first embodiment, if the orthographic projections of the low-frequency radiation unit 1 and the high-frequency radiation unit 2 on the metal reflector are to be avoided, the length of the two low-frequency vibrators in the low-frequency radiation unit 1 must be limited to avoid the low-frequency vibrator from touching When the high-frequency vibrator is encountered, this limits the radiation characteristics of the low-frequency radiation unit 1 to a certain extent.

[0043] Such as Figure 5 with Image 6 As shown, the embodiment of the present invention is improved on the basis of the first embodiment. Specifically, the end of the low-frequency vibrator also has a bendi...

Example Embodiment

[0046] Example three

[0047] Such as Figure 7 As shown, the embodiment of the present invention is modified on the basis of the second embodiment, and provides an ultra-wideband five-band array antenna. Specifically, the multiple high-frequency radiation units in each column of the high-frequency array in the embodiment of the present invention are divided into two parts from the middle, and are respectively subordinate to two mutually independent high-frequency systems. In other words, the embodiment of the present invention has four independent high-frequency systems, which are Figure 7 The part selected by the four rectangular boxes, plus another low-frequency system, constitutes a five-band array antenna where one low-frequency system and four high-frequency systems coexist.

[0048] Other features in the embodiment of the present invention are the same as those in the second embodiment, so they will not be repeated here.

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Abstract

The invention relates to an ultra-wide frequency band multi-band array antenna which comprises a metal reflection plate, a low-frequency radiation unit and a high-frequency radiation unit. The low-frequency radiation unit and the high-frequency radiation unit are mounted on the metal reflection plate, the low-frequency radiation unit works on a low-frequency band, and the high-frequency radiation unit works on a high-frequency band. The low-frequency radiation unit comprises two low-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode, the two low-frequency oscillators are connected with a feed network, and a +/-45-degree polarization far field radiation directional diagram is generated; the high-frequency radiation unit comprises two high-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode. The multi-band array antenna is capable of covering a 694-960 MHz ultra-wide frequency band and a 1710-2690 MHz ultra-wide frequency band and is simple in structure so as to be compatible with all frequency bands of a current mobile communication network.

Description

technical field [0001] The invention relates to the communication field, in particular to an ultra-wideband multi-band array antenna. Background technique [0002] Due to the large-scale use of intelligent mobile terminals, data services in mobile communications have experienced rapid growth. In order to meet the requirements for high-speed data transmission in mobile communications, major operators at home and abroad are vigorously developing the fourth-generation (4G) mobile communication technology mainly based on TD-LTE and FDD-LTE. 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 ...

Claims

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Application Information

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IPC IPC(8): H01Q5/00H01Q1/36H01Q1/38H01Q21/28
Inventor 吴壁群
Owner GUANGDONG BROADRADIO COMM TECH
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