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Millimeter wave folding-type reflective array antenna integrated with plane feed source

A reflectarray antenna and reflectarray technology, which is applied in the fields of wireless communication, radar, antenna design, and imaging systems, can solve problems such as uneven amplitude, gain loss, and phase error, and achieve small footprint, low cross-polarization, and low The effect of loss

Active Publication Date: 2014-01-01
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, amplitude inhomogeneity, phase error, and overflow loss caused by the inability of the feed beam to be completely intercepted by the reflector will cause loss of gain and decrease in efficiency. Generally, the efficiency of reflectarray antennas is only 10%-30%.

Method used

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  • Millimeter wave folding-type reflective array antenna integrated with plane feed source
  • Millimeter wave folding-type reflective array antenna integrated with plane feed source
  • Millimeter wave folding-type reflective array antenna integrated with plane feed source

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] like figure 1As shown, the present invention provides a millimeter-wave folded reflectarray integrated with a planar feed, which is composed of a planar feed 1, a reflectarray 2 and a polarization grid 3, and the planar feed 1 is located at the bottom of the antenna. Including the bottom dielectric substrate 11, the metal surface 12 positioned on the top surface of the bottom dielectric substrate, the metal surface 13 positioned on the bottom surface of the bottom dielectric substrate, the reflection array 2 is located in the middle layer of the antenna, includes the middle layer dielectric substrate 21, is located in the middle The metal patch 22 above the layer dielectric substrate and the ground metal 23 located below the intermediate layer dielectric substrate, the polarization grid 3 is located at the topmost layer of the antenna, including the top layer di...

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Abstract

The invention discloses a millimeter wave folding-type reflective array antenna integrated with a plane feed source. The millimeter wave folding-type reflective array antenna is of a layered structure and is sequentially provided with a polarization grid, a reflective array and the plane feed source from top to bottom. On the basis of a plane substrate integration waveguide structure, a substrate integration waveguide gap array antenna is used as the feed source for conducting feed on folding-type reflection, phase compensation is obtained on a reflection face, spherical waves are converted to plane waves, and therefore the antenna which is high in gain and efficiency and stable in beam pointing is realized. Under the Q-LINKPAN application background and directing at the development demands of a plane-integration and miniaturized long-distance wireless communication system, the low-section antenna which is high in gain and efficiency and capable of being integrated with a plane millimeter wave circuit is realized, the millimeter wave folding-type reflective array antenna has the advantages of being simple in structure, compact in size and low in cost, and the requirements for plane circuit integration are met.

Description

technical field [0001] The invention relates to the field of antenna design, in particular to a low-profile, high-gain, high-efficiency folded reflectarray antenna integrated with a planar feed source, which is mainly used in the fields of wireless communication, radar, and imaging systems. Background technique [0002] In recent years, with the rapid development of millimeter-wave reflectarray antennas in modern communication, radar, imaging systems and other application fields, millimeter-wave reflectarray antennas are facing the challenges of high efficiency, low cost, planarization, and high integration. The traditional reflectarray antenna uses the phase shift characteristics of the planar elements to replace the curved surface characteristics of the paraboloid itself to realize the function of converting spherical waves to plane waves to improve gain and directivity. On the basis of the traditional planar reflectarray antenna, the folded reflectarray antenna uses the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q19/10H01Q21/24
Inventor 洪伟江梅张彦
Owner SOUTHEAST UNIV
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