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Broadband high isolation double circularly polarized antenna based on single layer artificial surface plasmon

An artificial surface plasma, high isolation technology, used in antennas, antenna coupling, resonant antennas and other directions, can solve the problems of low aperture efficiency, complex structure and low isolation of dual circularly polarized antennas, and increase the scope of application scenarios. , the effect of high aperture efficiency and high isolation

Active Publication Date: 2019-10-08
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In summary, the problems existing in the prior art are: the existing dual circularly polarized antennas have low aperture efficiency, low isolation, and complex structures

Method used

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  • Broadband high isolation double circularly polarized antenna based on single layer artificial surface plasmon
  • Broadband high isolation double circularly polarized antenna based on single layer artificial surface plasmon
  • Broadband high isolation double circularly polarized antenna based on single layer artificial surface plasmon

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] The broadband high-isolation dual circularly polarized antenna based on the odd-mode single-layer artificial surface plasmon proposed by the present invention achieves high aperture efficiency, wide port isolation and directional radiation, and greatly improves the performance of the dual circularly polarized antenna. scope of application.

[0038] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] like figure 1 As shown, the single-layer artificial surface plasmon-based broadband high-isolation dual circularly polarized ante...

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Abstract

The invention belongs to the technical field of a microwave antenna and discloses a broadband high isolation double circularly polarized antenna based on a single layer artificial surface Plasmon. Theantenna includes a radiator, two vertically placed differential feed baluns and a metal reflector, wherein the radiator is located above the floor, upper ends of the two baluns are connected with theradiator, lower ends of the baluns penetrate through the metal floor and are connected with a feeding coaxial line, the radiator consists of four dipoles, two pairs of feeders and four parasitic metal rings, and the two pairs of feeders include a pair of coplanar strip lines and a pair of odd-mode artificial surface plasmon transmission lines. Full-wave electromagnetic simulation and processing tests are performed for the designed antenna, and that the antenna is capable of achieving broadband high isolation double circularly polarized radiation in the designed frequency band is verified. Theantenna is advantaged in that properties of high isolation, wide axial ratio bandwidth, high aperture efficiency and easy processing are achieved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and in particular relates to a broadband high-isolation double circularly polarized antenna based on a single-layer artificial surface plasmon. Background technique [0002] At present, the closest existing technology: one is to use a bent microstrip line to etch two mutually orthogonal slots on the floor, and the distance between the two slots is a quarter of a waveguide wavelength, so as to ensure that the feeding phase difference between the slots is 90 degrees. Due to the geometric symmetry of this structure, the antenna can form dual circular polarization when the two ports are fed separately. However, due to the non-uniform feeding amplitude on each slot, a low antenna aperture efficiency of about 40% is caused. In addition, there is a dual circularly polarized antenna that replaces the radiation slot with a radiation patch structure. The structure of the antenna is simplified ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q9/28H01Q19/10
CPCH01Q1/38H01Q1/50H01Q1/52H01Q9/285H01Q19/104
Inventor 尹佳媛李会东任建尹应增
Owner XIDIAN UNIV
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