Ka-band single-feed-point circularly polarized antenna

A circularly polarized antenna, single-feed technology, applied in the direction of antenna, antenna coupling, resonant antenna, etc., can solve the problem of narrow bandwidth of circularly polarized antenna

Inactive Publication Date: 2021-05-07
重庆两江卫星移动通信有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of narrow bandwidth of existing circularly polarized antennas, the present invention provides a single-feed point circularly polarized antenna in the Ka frequency band

Method used

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  • Ka-band single-feed-point circularly polarized antenna
  • Ka-band single-feed-point circularly polarized antenna
  • Ka-band single-feed-point circularly polarized antenna

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Embodiment

[0044] Such as figure 1 As shown, in this embodiment, a Ka-band single-feed point circularly polarized antenna is characterized in that it includes a three-layer structure arranged in sequence from top to bottom, such as figure 2 A double-layer dielectric substrate is also arranged between the three-layer structure shown, and the double-layer dielectric substrate includes an upper dielectric substrate 3 and a lower dielectric substrate 4; the working bandwidth and the axial ratio bandwidth of the antenna are widened by the two-layer dielectric substrate;

[0045] The first layer structure includes a parasitic patch 1 and a decoupling frame 5. The radiation patch 2 is arranged in the upper middle of the upper dielectric substrate 3 for expanding the working bandwidth of the antenna. The decoupling frame 5 is arranged on the upper middle of the upper dielectric substrate 3. Around the upper part, when the unit antennas form an array, it is used to prevent mutual interference be...

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Abstract

The invention discloses a Ka-frequency-band single-feed-point circularly polarized antenna which is characterized in that the antenna comprises three layers of structures which are sequentially arranged from top to bottom, double-layer dielectric substrates are further arranged among the three layers of structures, and the working bandwidth and the axial ratio bandwidth of the antenna are widened through the two layers of dielectric substrates; the first-layer structure comprises a parasitic patch and a decoupling frame, the radiation patch is arranged in the middle of the upper part of the upper-layer dielectric substrate and is used for expanding the working bandwidth of the antenna, and the decoupling frame is arranged at the periphery of the upper part of the upper-layer dielectric substrate and is used for preventing mutual interference among antenna units when the unit antennas form an array; the second-layer structure comprises a radiation patch, the radiation patch is arranged between the upper-layer dielectric substrate and the lower-layer dielectric substrate, the radiation patch is connected with a feed probe, and the feed probe is used for conducting electromagnetic waves to the radiation patch; and the third-layer structure comprises a floor which is arranged on the lower layer of the lower-layer dielectric substrate and used for reflecting electromagnetic waves.

Description

technical field [0001] The invention relates to an antenna, in particular to a Ka frequency band single-feed point circularly polarized antenna. Background technique [0002] With the development of wireless communication technology, spectrum resources are becoming increasingly scarce, especially below the X-band. In addition, today's society has higher and higher requirements for information transmission rate, transmission stability, etc., which has led to more and more applications of millimeter wave frequency bands in wireless communication systems, especially the Ka frequency band. Compared with lower frequency bands, millimeter wave frequency bands have stricter requirements on antennas. Therefore, in order to effectively improve the performance of wireless communication systems in the millimeter wave band, a large number of researchers have begun to study Ka-band antennas. Different communication scenarios have different requirements on the performance, quality and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/04H01Q1/52
CPCH01Q9/0414H01Q9/0428H01Q9/045H01Q1/521
Inventor 刘金利罗超鸣鲁国林
Owner 重庆两江卫星移动通信有限公司
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