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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, but also reduces the antenna gain, so further improvement is required

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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 working in a lower frequency band and a high-frequency radiation unit 1 working in a higher frequency band installed on the metal reflector. Frequency Radiation Unit 2. Preferably, the low-frequency radiation unit 1 works in the frequency range of 694-960 MHz, and the high-frequency radiation unit 2 works in the frequency range of 1710-2690 MHz.

[0033] The low-frequency radiating unit 1 includes two low-frequency vibrators that are polarized at ±45 degrees and are installed orthogonally to each other, namely, the positively polarized low-frequency vibrator 101 and the negatively polarized low-frequency vibrator 102. 45-degree polarized far-field radiation pattern. Centers of multiple low-frequency radiation units 1 are arranged at equal intervals along the first referenc...

Embodiment 2

[0042] In the multi-band array antenna, reducing the overlapping portion of the orthographic projections of the antennas of each frequency band on the metal reflector, or even making them non-overlapping, can effectively reduce the electrical interference between the antennas of each frequency band. However, in Embodiment 1, if the orthographic projections of the low-frequency radiation unit 1 and the high-frequency radiation unit 2 are to be avoided from overlapping on the metal reflector, the lengths of the two low-frequency oscillators in the low-frequency radiation unit 1 must be limited to prevent the low-frequency oscillators from touching When encountering a high-frequency vibrator, this limits the radiation characteristics of the low-frequency radiation unit 1 to a certain extent.

[0043] Such as Figure 5 and Figure 6 As shown, the embodiment of the present invention is improved on the basis of Embodiment 1. Specifically, the end of the low-frequency vibrator also ...

Embodiment 3

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

[0048] Other features in this embodiment of the present invention are the same as those in Embodiment 2, so details 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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