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Low-profile low-cross-polarization dual-polarization electromagnetic dipole antenna

An electromagnetic dipole and magnetic dipole technology, applied in the field of dual-polarized electromagnetic dipole antennas, can solve the problems that no theoretical analysis is given and the nature of the actual feed differential is difficult to guarantee, and achieve good and stable parameter optimization width, the effect of increasing the cross-polarization ratio

Active Publication Date: 2022-05-13
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The antenna unit of this scheme occupies a small volume, but the differential feeding method is adopted, and the theoretical effect is better. The differential nature of the actual feeding is difficult to guarantee, and no theoretical analysis is given.

Method used

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  • Low-profile low-cross-polarization dual-polarization electromagnetic dipole antenna
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  • Low-profile low-cross-polarization dual-polarization electromagnetic dipole antenna

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] This embodiment provides a dual-polarized electromagnetic dipole antenna with low cross-section and low cross-polarization, and its overall structure schematic diagram, top view and side view are respectively as follows figure 1 (a), figure 1 (b) and figure 1 As shown in (c), it includes two pairs of electric dipoles, two pairs of magnetic dipoles 2 , a feed structure 3 , a metal post 4 and a metal reflector 6 .

[0033] The overall structural schematic diagram and side view of the single-polarized antenna decomposed from the antenna described in this embodiment are as follows: figure 2 (a) and 2(b).

[0034] The structure of the two pairs of electric dipoles is the same, and they are 90°central rotational symmetry; a pair of electric dipoles are two bent metal patches, including two horizontal metal patches 1 and four vertical metal patches ...

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Abstract

The invention discloses a low-profile low-cross-polarization dual-polarization electromagnetic dipole antenna, and belongs to the technical field of mobile communication base station antennas. The antenna comprises two pairs of electric dipoles, two pairs of magnetic dipoles, a feed structure, a metal column and a metal reflecting plate, the electric dipole comprises two horizontal metal patches and four vertical metal patches; the magnetic dipole is a rectangular metal patch, and an included angle between the magnetic dipole and the metal reflecting plate is 60 degrees; the feed structure comprises a pair of orthogonally placed inverted L-shaped feed structures and two SMA joints, and each inverted L-shaped feed structure is divided into four parts which are connected in sequence; and the metal column is positioned between the metal reflecting plate and the vertical metal patch. According to the antenna, the low profile is kept, and meanwhile, the cross polarization ratio in a + / -60-degree sector is increased through the coupling effect of the parasitic structure, and the half-power beam width is stabilized; and the vertical metal patch which is bent downwards and the metal column structure are introduced, so that good impedance matching in a frequency band can be realized only by performing simple parameter optimization.

Description

technical field [0001] The invention belongs to the technical field of mobile communication base station antennas, and in particular relates to a dual-polarized electromagnetic dipole antenna with low profile and low cross polarization. Background technique [0002] One of the elements in the mobile communication system is the base station antenna. The high requirements in the new communication era cannot be separated from the optimization and innovation of the base station antenna. Therefore, the base station antenna has been changing and upgrading to meet the increasing communication needs. Reducing cross-polarization within ±60° sectors is a fundamental requirement for base station antennas. [0003] The prior art "A broadband dual-polarized magneto-electric dipole antenna with simple feeds, IEEE Antennas and Wireless Propagation Letters, vol.8, 2009" discloses a ±45° polarized magneto-electric dipole with broadband characteristics and Very high port isolation, but with ...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q9/16H01Q25/00
CPCH01Q1/36H01Q1/50H01Q9/16H01Q25/001
Inventor 李家林王龙杰
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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