Low-profile broadband circularly polarized magnetoelectric dipole antenna

A technology of dipole antenna and electric dipole, applied in resonant antenna, antenna grounding device, parts of resonant antenna, etc., can solve the problems of reducing profile, large space and restricting application, etc.

Active Publication Date: 2021-07-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, these previous studies mainly focused on how to realize the circular polarization characteristics by designing the antenna structure, and did not take any measures to reduce the profile in the design, so the existing circularly polarized magnetoelectric dipole antenna still has a profile The shortcomings of high height and large space volume greatly limit its application in modern wireless communication systems

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  • Low-profile broadband circularly polarized magnetoelectric dipole antenna
  • Low-profile broadband circularly polarized magnetoelectric dipole antenna
  • Low-profile broadband circularly polarized magnetoelectric dipole antenna

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0038] A low-profile broadband circularly polarized magnetoelectric dipole antenna, the overall structure of which is shown in figure 1 as shown,

[0039] A horizontal electric dipole antenna, a magnetic dipole antenna perpendicular to the horizontal electric dipole antenna, a dielectric substrate, and an antenna feeder;

[0040] The horizontal electric dipole antenna includes four square horizontal metal patches 1, and the four metal patches are arranged at the center of the dielectric substrate in a 2×2 array;

[0041] The magnetic dipole antenna includes a rectangular metal sheet 2 and a metal floor 3. The rectangular metal sheet 2 is arranged on both sides of each square horizontal metal patch adjacent to other metal patches and ex...

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Abstract

The invention provides a low-profile broadband circularly-polarized magnetoelectric dipole antenna, and belongs to the technical field of antennas. According to the antenna, the rectangular metal sheet of the magnetic dipole antenna is innovatively designed to be provided with the gap, so that the current path of the magnetic dipole antenna is prolonged, the profile height of the antenna is reduced from conventional 0.25[lambda] to 0.11[lambda] ([lambda] is the space wavelength at the center frequency), and the defect that the profile of the circularly polarized magnetoelectric dipole antenna is relatively high is effectively overcome; and the complexity of the three-dimensional structure is not increased while the height of the profile is reduced, so that the antenna also has the advantages of simple structure and easiness in batch processing, and in addition, the antenna still keeps the advantages of large bandwidth, high radiation gain, symmetric directional diagram, small back radiation and the like.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a low-profile broadband circularly polarized magnetoelectric dipole antenna. Background technique [0002] The unique performance of circularly polarized antennas makes them play a special role in many fields. For example, using circularly polarized antennas in radar systems can suppress the interference caused by small molecules and particles in the air such as clouds, rain, and fog; In space measurement and satellite communication, when the linearly polarized wave passes through the ionosphere, it will produce Faraday electromagnetic rotation effect, which will cause the signal attenuation at the receiving end, and this attenuation can be avoided by using circularly polarized waves; at the same time, due to the linear polarization The polarized wave can be decomposed into two circularly polarized waves with opposite hand direction and the same amplitude, so circular polarizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q9/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q9/06
Inventor 潘锦姬新阳杜正军邹银杨德强刘贤峰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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