A Flat Broadband Circularly Polarized Antenna with Symmetrical Beam

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: 2020-08-11
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A Flat Broadband Circularly Polarized Antenna with Symmetrical Beam
  • A Flat Broadband Circularly Polarized Antenna with Symmetrical Beam
  • A Flat Broadband Circularly Polarized Antenna with Symmetrical Beam

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Embodiment Construction

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

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

[0037] Such as 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 polariz...

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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 invention relates to the field of antennas, in particular to a flat 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, and anti-polarization mismatch, which are characteristics that other linearly polarized antennas do not have. Therefore, they are often used in satellite communications and communications in complex environments. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(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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