Planar double-helix array of double-frequency dual-polarization base-station antenna

A base station antenna, dual-polarization technology, applied in the field of planar double helix arrays, can solve the problems of large mutual influence, deterioration of high-frequency pattern, width of reflector, etc., to achieve the effect of improving distance and improving space utilization.

Inactive Publication Date: 2012-06-20
CHINA TELECOM CORP LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The dicolumn linear array is asymmetrical in the width dimension of the reflector, which causes the main lobe of the main polarization pattern on the horizontal plane to point away from the center position, and the symmetry of the cross-polarization pattern on the horizontal plane becomes poor, and the cross-polarization discrimination within ±60° The ratio becomes worse

Method used

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  • Planar double-helix array of double-frequency dual-polarization base-station antenna
  • Planar double-helix array of double-frequency dual-polarization base-station antenna
  • Planar double-helix array of double-frequency dual-polarization base-station antenna

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Embodiment Construction

[0032] Further illustrate below in conjunction with accompanying drawing and embodiment:

[0033] 1. Overall

[0034] Such as figure 1 , the present invention includes a high-frequency basic oscillator 10, a low-frequency basic oscillator 20, a reflector 30 and a feed network 40;

[0035] The high-frequency basic oscillator 10 and the low-frequency basic oscillator 20 are arranged on the front of the reflector 30, and the feed network 40 is arranged on the back of the reflector 10;

[0036] The high-frequency basic oscillators 10 are alternately shifted left and right in pairs to form a high-frequency radiation array, and the coaxial line 41 in the feed network 40 feeds the high-frequency basic oscillators 10, wherein the outer conductor of the coaxial line 41 is connected to the high-frequency basic oscillator On the high-frequency connection groove 11 of 10, the core wire of the coaxial line 41 is connected to the high-frequency connection piece 12 on the top of the high-f...

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Abstract

The invention discloses a planar double-helix array of a double-frequency dual-polarization base-station antenna, which relates to double-frequency dual-polarization base-station antennas for mobile communication. The planar double-helix array is structurally characterized in that high-frequency fundamental oscillators (10) and low-frequency fundamental oscillators (20) are arranged on the front side of a reflector (30), a feed network (40) is arranged on the back side of the reflector (30), the high-frequency fundamental oscillators (10) alternately and bilaterally move pairwise to form a high-frequency radiation array, and the low-frequency fundamental oscillators (20) alternately, bilaterally and correspondingly move in the direction opposite to the moving direction of the high-frequency fundamental oscillators (10) to form a low-frequency radiation array. The horizontal beam width can be adjusted by adjusting laterally moving quantity of the fundamental oscillators in the horizontal direction, cross polarization discrimination ratio can be adjusted by adjusting the width of the reflector and the height of a side arm, wind resistance can be reduced by decreasing the width of the reflector, and space utilization rate of the antenna is increased. The planar double-helix array is applicable to the field of arrangement of high-frequency and low-frequency oscillators of the double-frequency dual-polarization base-station antenna.

Description

technical field [0001] The invention relates to a mobile communication dual-frequency dual-polarization base station antenna, in particular to a planar double-helix array of a dual-frequency dual-polarization base station antenna. Background technique [0002] At present, there are two types of array arrangements used by dual-frequency dual-polarized base station antennas: a dual-column linear array and a single-column linear array. Both array arrangements have their disadvantages: [0003] The dicolumn linear array is asymmetrical in the width dimension of the reflector, which causes the main lobe of the main polarization pattern on the horizontal plane to point away from the center position, and the symmetry of the cross-polarization pattern on the horizontal plane becomes poor, and the cross-polarization discrimination within ±60° The ratio becomes worse, and the reflector is required to be very wide; [0004] The distance between the high-frequency basic oscillator and...

Claims

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Application Information

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IPC IPC(8): H01Q19/10H01Q21/30H01Q25/00H01Q1/52
CPCH01Q21/06H01Q21/28H01Q19/10H01Q21/29
Inventor 徐成耀鲍重杰陈志勇程然
Owner CHINA TELECOM CORP LTD
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