Planar broadband circularly-polarized antenna with symmetrical beams

A circularly polarized antenna and circularly polarized technology, applied in antenna unit combinations with different polarization directions, antennas, antenna coupling, etc., can solve the problems of large design difficulty, lack of broadband radiation characteristics, etc., and achieve the guarantee of working characteristics Effect

Active Publication Date: 2019-04-16
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. In the microwave high-frequency band or the millimeter-wave frequency band, there are requirements for miniaturization and portability of the device and the entire system, so the traditional circularly polarized antenna design based on the three-dimensional radiation unit will no longer be used, and the antenna form of the planar structure must be considered
[0007] 4. Traditional substrate-integrated waveguide structure normal radiation antennas, including slot antennas, resonant cavity antennas, etc., do not have broadband radiation characteristics
Combining 3 and 4, it is very difficult to design a substrate-integrated waveguide antenna with planar structure, normal radiation and low loss in the millimeter wave frequency band

Method used

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  • Planar broadband circularly-polarized antenna with symmetrical beams
  • Planar broadband circularly-polarized antenna with symmetrical beams
  • Planar broadband circularly-polarized antenna with symmetrical beams

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Embodiment Construction

[0035] The technical solutions of the present invention will be further introduced below in conjunction with specific embodiments.

[0036] This specific embodiment discloses a flat-panel broadband circularly polarized antenna with symmetrical beams, such as figure 1 As shown in (a), including an upper dielectric substrate 1 and a lower dielectric substrate 2, the upper and lower surfaces of the upper dielectric substrate 1 are provided with metal layers, and the upper and lower surfaces of the lower dielectric substrate 2 are also provided with metal layer, and the metal layer on the lower surface of the upper dielectric substrate 1 is in contact with the metal layer on the upper surface of the lower dielectric substrate 2 .

[0037] like figure 1As shown in (b), the upper dielectric substrate 1 is provided with four circular polarizer arrays 3 with the same structure, the four circular polarizer arrays 3 are arranged in a 90° rotation, and two adjacent circular polarizer ar...

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Abstract

The invention discloses a planar broadband circularly-polarized antenna with symmetrical beams, which comprises an upper dielectric substrate and a lower dielectric substrate, wherein four circularly-polarized sub arrays with the same structure are arranged in the upper dielectric substrate; and a four-path equal phase difference power divider is arranged on the lower dielectric substrate. The planar circularly-polarized antenna with a low profile and a wide band is designed by using a full printed circuit technology and is applicable to millimeter wave wireless communication and satellite communication represented by fifth generation (5G) mobile communication. The antenna has the characteristics of high precision, good repeatability, low cost and easy mass production.

Description

technical field [0001] The present invention relates to the field of antennas, in particular to a flat plate broadband circularly polarized antenna with symmetrical beams. Background technique [0002] Circularly polarized antennas have the characteristics of anti-multipath interference, anti-cloud and rain attenuation, anti-polarization mismatch, etc., which are not found in other linearly polarized antennas, so they are often used in satellite communications and complex environment communications. With the development of mobile communications, circularly polarized antennas have gradually become one of the important components of MIMO diversity system antennas. With the development of 5G communication technology, millimeter-wave communication has gradually become a hot spot in the market, and the research on related antennas has become more and more extensive. At the same time, with the expectation of 6G and future communication, satellite communication is an important par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q13/10H01Q21/00H01Q21/24H01Q25/00
CPCH01Q1/38H01Q1/50H01Q1/521H01Q13/106H01Q21/0075H01Q21/24H01Q25/004
Inventor 张彦洪伟朱晓维
Owner SOUTHEAST UNIV
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