Gap-loaded wide-band microstrip reflective array

A reflective array and wide-band technology, applied to electrical components, antennas, etc., can solve the problems of small dynamic range of phase compensation, reduction of antenna gain, and backward radiation, etc., achieve large dynamic range, realize gain frequency response, and increase dynamic range Effect

Inactive Publication Date: 2009-07-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Etched slots on the ground plane can easily cause back radiation, which reduces the gain of the antenna
There is only one kind of reflective array composed of three independent patches and a pair of slits etched on the patches. Its structure is relatively complex and the dynamic range of phase compensation is small. Small size reflectarray capabilities
Another kind of unit is a reflection array composed of a square patch and a slit etched on the patch. By adjusting the size of the patch and the length of the slit at the same time, the phase compensation amount required for the beamforming radiation of the reflector array is obtained, but its frequency band is relatively narrow. narrow

Method used

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  • Gap-loaded wide-band microstrip reflective array
  • Gap-loaded wide-band microstrip reflective array
  • Gap-loaded wide-band microstrip reflective array

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] see figure 1 , the slot-loaded broadband microstrip reflectarray provided by the present invention includes a feed 1 and a reflectarray 2 at a certain distance from the feed 1 .

[0024] see figure 2 , image 3 , the reflection array 2 includes a ground plate 27 and a dielectric substrate 22 having an upper surface and a lower surface, a gap 23 is provided between the dielectric substrate 22 and the ground plate 27, and the lower surface of the dielectric substrate 22 is opposite to the ground plate 27;

[0025] The upper surface of the dielectric substrate 22 is provided with a plurality of upper layer rectangular patches 21, and an upper layer slit 24 perpendicular to the polarization direction of the electromagnetic wave radiated by the feed source 1 is arranged in the upper layer rectangular patch 21, and each upper layer rectangular patch 21 The center ...

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Abstract

The invention discloses a slot-loading broadband micro-strip reflective array, which comprises a feed source (1) and a reflective array (2) away from the feed source (1) with a certain distance; the reflective array (2) comprises a grounding plate (27) and a medium substrate (22) arranged on the plane of the grounding plate (27); a gap (23) is arranged between the medium substrate (22) and the grounding plate (27); and the lower surface of the grounding plate (27) is opposite to the grounding plate (27). The slot-loading broadband micro-strip reflective array has simple structure; owing to the adoption of a double layer rectangular patch added with a slot and an air layer, the phase compensation value is improved by 50 to 80 percent, and therefore the size of the array is also increased correspondingly; in addition, gain band of -1dB dropping is also improved from 2 to 3 percent to 13 to 15 percent.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a microstrip reflector array antenna capable of realizing broadband gain frequency response. Background technique [0002] At present, the microstrip reflectarray antenna units that directly use the slots for phase compensation are mostly composed of microstrip patches and slots etched on the ground plane. Since the slots etched on the ground plate are easy to cause backward radiation, thereby reducing the gain of the antenna. There is only one kind of reflective array composed of three independent patches and a pair of slots etched on the patches. Its structure is relatively complex and the dynamic range of phase compensation is small. Small size reflectarray capabilities. Another kind of unit is a reflection array composed of a square patch and a slit etched on the patch. By adjusting the size of the patch and the length of the slit at the same time, the phase compensation amount requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/30H01Q3/44H01Q13/08
Inventor 刘震国
Owner SOUTHEAST UNIV
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