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High-different frequency isolation broadband double-frequency base station antenna array

A technology of base station antenna and high-frequency antenna, applied in antenna arrays, antennas, resonant antennas, etc., can solve the problems of excessive floor, large coupling between multi-frequency base stations, unstable pattern, etc., to achieve high isolation, reduce The effect of volume, good radiation performance

Active Publication Date: 2017-09-05
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-frequency isolation broadband dual-frequency base station antenna array, the antenna array structure is simple, without introducing filters and other external insertion loss, to overcome the large mutual coupling between multi-frequency base stations in the prior art Or the defect that the floor is too large and the pattern is unstable

Method used

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  • High-different frequency isolation broadband double-frequency base station antenna array
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  • High-different frequency isolation broadband double-frequency base station antenna array

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Embodiment 1

[0038] Such as Figure 1 to Figure 5 As shown, this embodiment provides a high-frequency isolation broadband dual-frequency dual-polarization base station antenna array, including a first high-frequency antenna unit 1, a second high-frequency antenna unit 2, a low-frequency antenna unit 3 and a floor 4, namely This embodiment is a three column antenna array, from figure 1 and figure 2 It can be seen from the figure that the three antenna units are all placed on the floor 4 and are located on the same horizontal plane, the first high-frequency antenna unit 1 and the second high-frequency antenna unit 2 are respectively placed on both sides of the floor 4, and the low-frequency antenna unit 3 Placed in the middle of the floor 4, such an arrangement can obtain good radiation performance and good matching isolation characteristics under a small floor; due to different frequencies, the heights of the vibrator arms of the three antenna units are also different, and the middle low ...

Embodiment 2

[0058] Such as Figure 9 As shown, the high-frequency isolation broadband dual-frequency dual-polarization base station antenna array of this embodiment includes a high-frequency antenna unit 1, a low-frequency antenna unit 2 and a floor 3, that is, this embodiment is a two-column antenna array, two The antenna units are all placed on the floor 3, and are located on the same horizontal plane. The high-frequency antenna unit 1 is placed on one side of the floor 3, and the low-frequency antenna unit 2 is placed in the middle of the floor 3. The high-frequency antenna unit 1 and the low-frequency antenna unit of the present embodiment 2 are dual-polarized antenna units, and the specific structure is the same as that of Embodiment 1.

Embodiment 3

[0060] This embodiment provides a high-frequency isolation broadband dual-frequency single-polarization base station antenna array. The first high-frequency antenna unit 1 and the second high-frequency antenna unit 2 are single-polarization antenna units, that is, there are two dipole arms. The distributed inductance is a pair of microstrip bent-line inductors, and the two dipole arms constitute a horizontally polarized dipole arm or a vertically polarized dipole arm, and the two dipole arms are connected through a pair of microstrip bent-line inductors; similarly , the low-frequency antenna unit 3 is a dual-polarized antenna unit, that is, there are two dipole arms, and the two dipole arms form a horizontally polarized dipole arm or a vertically polarized dipole arm; the distributed capacitor is a metal patch, and the metal patch The chip is set in the middle of the two dipole arms, and is close to the two dipole arms without contact; the first balun and the second balun are s...

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Abstract

The invention discloses a high-different frequency isolation broadband double-frequency base station antenna array, which comprises at least one high-frequency antenna unit, a low-frequency antenna unit and a floor board, wherein when one high-frequency antenna unit exists, the high-frequency antenna unit is placed at one side of the floor board, when multiple high-frequency antenna units exist, the high-frequency antenna units are placed at two sides of the floor board respectively, each high-frequency antenna unit comprises multiple oscillator arms and a Balun, the oscillator arms are connected through a distributed inductor, and feeding is carried out through the Balun; the low-frequency antenna unit is placed in the middle of the floor board and comprises multiple oscillator arms and a Balun, the oscillator arms are connected through a distributed capacitor, feeding is carried out through the Balun, the Balun is provided with a feeder line and an H-type microstrip branch, and the H-type microstrip branch is connected with the feeder line. In a condition of not cascading filters, high isolation in a condition in which the distance between the different-frequency antenna units is small and the floor board is small can be realized, insertion loss of a filter is avoided, a stable pattern in a broadband is realized, and due to a decoupling structure, the volume of an antenna unit is not added extraly.

Description

technical field [0001] The invention relates to an antenna array, in particular to an antenna array of a high frequency isolation broadband dual-frequency base station, which belongs to the field of mobile communication. Background technique [0002] With the rapid development of mobile communication technology, it is often required in the construction of base station antennas that the array antenna not only covers multiple frequency bands, but also supports multiple wireless system systems. When designing dual-band or multi-band base station array antennas, especially broadband dual-band or multi-band antennas, the antenna usually has clutter outside the working frequency band. These out-of-band clutter will cause serious coupling between different frequency bands, and will also seriously affect the antenna pattern. [0003] Traditional dual-frequency dual-polarized base station antennas require cascaded filters or combiners / duplexers in order to achieve good inter-frequen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q1/52H01Q21/00H01Q21/24H01Q21/30
CPCH01Q1/36H01Q1/38H01Q1/50H01Q1/52H01Q1/523H01Q21/0006H01Q21/0075H01Q21/24H01Q21/30H01Q1/246H01Q25/001H01Q21/28H01Q5/48H01Q9/28H01Q1/521H01Q5/371H01Q21/062H01Q21/26
Inventor 章秀银薛成戴吴裕锋
Owner SOUTH CHINA UNIV OF TECH
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