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Single-layer dual-frequency circularly-polarized reflective array antenna

A reflectarray antenna, dual-frequency antenna technology, applied in the direction of antenna, antenna coupling, independent antenna unit combination, etc., can solve the problem of poor directivity of reflectarray antenna, and achieve the effect of improving directivity and reducing mutual influence

Inactive Publication Date: 2014-03-12
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the directivity of the single-layer dual-frequency line-circular polarization conversion reflectarray antenna is poor at high frequencies

Method used

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  • Single-layer dual-frequency circularly-polarized reflective array antenna
  • Single-layer dual-frequency circularly-polarized reflective array antenna
  • Single-layer dual-frequency circularly-polarized reflective array antenna

Examples

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Embodiment Construction

[0027] figure 1 It is a side-view structure diagram of Embodiment 1 of the single-layer dual-frequency circularly polarized reflectarray antenna of the present invention. like figure 1 As shown, the single-layer dual-frequency circularly polarized reflectarray antenna 100 includes: a circularly polarized feed 10 and a single-layer reflectarray 20, wherein the upper surface of the single-layer reflectarray 20 is provided with a dual-frequency antenna unit (high-frequency antenna unit 21 and low-frequency antenna unit 22), the lower surface of the single-layer reflectarray 20 adopts a frequency selective surface.

[0028] The single-layer reflectarray 20 includes a high-frequency antenna unit 21 and a low-frequency antenna unit 22 with similar topological structures. 22 for phase compensation to produce the desired radiation beam. Wherein, the phase compensation can be realized by changing the size of the high-frequency antenna unit 21 and / or the low-frequency antenna unit 22...

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PUM

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Abstract

The invention provides a single-layer dual-frequency circularly-polarized reflective array antenna comprising a circularly-polarized feed source and a single-layer reflective array. A dual-frequency antenna unit is disposed on the upper surface of the single-layer reflective array. The lower surface of the single-layer reflective array is a frequency selection surface. The frequency selection surface serves as the lower surface of the single-layer reflective array, so that coupling action of different-frequency antenna units is reduced and directionality of the antenna is improved.

Description

technical field [0001] The invention relates to antenna technology, in particular to a single-layer dual-frequency circularly polarized reflection array antenna. Background technique [0002] With the rapid development of information technology, antennas are required to be multi-functional. Dual-frequency circularly polarized reflectarray antenna, as an antenna technology that can achieve good circularly polarized performance in two operating frequency bands, has become a research hotspot in reflectarray antenna technology. [0003] The traditional dual-frequency circular polarization reflectarray antenna includes a single-layer dual-frequency line-circular polarization conversion reflectarray antenna. The single-layer dual-frequency line-circular polarization conversion reflectarray antenna is to reflect the same-phase circular pole after the linearly polarized wave emitted by the linearly polarized feed is subjected to specific phase compensation along two orthogonal dire...

Claims

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Application Information

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IPC IPC(8): H01Q1/52H01Q19/10H01Q21/30
Inventor 钟显江陈蕾杨才兴王超史小卫
Owner XIDIAN UNIV
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