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Broad-band dual-polarized electromagnetic dipole antenna

An electromagnetic dipole and magnetic dipole technology, applied in the field of new broadband dual-polarized electromagnetic dipole antennas, can solve problems such as narrow operating frequency bands, achieve stable gain, good technical foresight, and expand the application range

Pending Publication Date: 2017-08-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional microstrip antenna using probe excitation can achieve dual-polarization characteristics, the working frequency band excited by this dual-probe is generally very narrow, which is also the biggest bottleneck encountered in practical applications.

Method used

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  • Broad-band dual-polarized electromagnetic dipole antenna
  • Broad-band dual-polarized electromagnetic dipole antenna
  • Broad-band dual-polarized electromagnetic dipole antenna

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Embodiment Construction

[0027] Based on the theory of electromagnetic dipole complementarity, the present invention uses orthogonal bow-tie-shaped gaps to load patches to form electric dipoles, and at the same time, vertical patches with a quarter wavelength distance from the ground and the floor between them form magnetic dipoles. Realize the characteristics of broadband dual polarization. In addition, a bent Γ-shaped feed structure is used to realize the feed. The feed structure has the functions of realizing energy transmission from the coaxial line to the radiation terminal, coupling, and adjusting impedance to achieve antenna impedance matching. The bottom end of the Γ-shaped feed structure is connected to the coaxial joint at the bottom of the floor. A metal fence is added around the antenna, and its height is the same as that of the antenna. This structure can also play a role in protecting the stability of the antenna structure in harsh environments.

[0028] The technical solution of the pr...

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Abstract

The invention discloses a broad-band dual-polarized electromagnetic dipole antenna. The antenna is based on an electromagnetic dipole complementation work principle. An orthogonal bow-tie-type gap loading paster is used to form an electric dipole. A vertical paster which has a quarter wavelength distance with ground and a middle floor are used to form a magnetic dipole so as to realize an antenna broadband dual polarization characteristic. A bended inverted-J shaped feed structure is used to realize feed. The feed structure possesses functions of realizing energy transmission from a coaxial line to a radiation terminal, coupling and adjusting an impedance to realize antenna impedance matching. A metal reflection box placed below the antenna has effects of improving an antenna direction diagram and protecting antenna stability. The antenna can realize good impedance matching in a wide work frequency band and simultaneously possesses characteristics of high isolation, a high gain, consistence of E surface and H surface direction diagrams and the like. By using the novel electromagnetic dipole antenna provided in the invention, the structure is simple, installation cost and an installation space of the antenna can be reduced and an important actual application value is possessed.

Description

technical field [0001] The invention relates to the technical field of dual-polarization antennas, in particular to a novel broadband dual-polarization electromagnetic dipole antenna. Background technique [0002] Dual-polarized antennas have been widely used in recent years because of their polarization diversity, which can effectively expand channel capacity in a limited installation space and greatly alleviate the problem of multipath fading in communication systems. Although the traditional probe-excited microstrip antenna can achieve dual-polarization characteristics, the operating frequency band excited by this dual-probe is generally very narrow, which is also the biggest bottleneck encountered in practical applications. [0003] The broadband dual-polarized electromagnetic dipole antenna is realized by using the principle of electromagnetic dipole complementarity. Compared with the traditional probe-excited microstrip antenna, the working bandwidth of the antenna can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q9/26H01Q1/52H01Q21/00
CPCH01Q1/36H01Q1/50H01Q1/52H01Q9/26H01Q21/00H01Q21/0006
Inventor 郭莹朱俊杰陈新蕾
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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