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Metasurface-based radiation pattern-reconfigurable antenna

A technology for reconstructing antennas and patterns, applied in the microwave field, can solve the problems of high loss, high cost, complex structure, etc., and achieve the effects of good consistency, small size and simple structure

Inactive Publication Date: 2019-03-19
YULIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can realize the reconfigurable antenna of the pattern without a phase shifting system, and can solve the problems of complex structure, high loss and high cost while ensuring high performance

Method used

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Examples

Experimental program
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Effect test

Embodiment 2

[0034] Embodiment 2 has the same structure as Embodiment 1, only the following parameters are adjusted:

[0035] Both the first dielectric plate 1 and the second dielectric plate 2 adopt Teflon (tm), and its dielectric constant ε r =2.1, dielectric loss tanδ=0.001, first dielectric plate 1 thickness h=2mm, second dielectric plate 2 thickness t=1mm; patch array 4 is a 2x 2-type patch array, row period pitch p1=8mm, column Periodic pitch p2 = 6mm; length of the long side of the rectangular patch a = 7mm, length of the wide side b = 5mm; the diameter of the metallized through hole 5 = 0.2mm; the length of the gap ls of the floor 3 = 10mm, the width of the gap ws = 0.5 mm; the length lf=10mm and the width wf=0.5mm of the feeder line 6.

Embodiment 3

[0037] Embodiment 3 has the same structure as Embodiment 1, only the following parameters are adjusted:

[0038] Both the first dielectric plate 1 and the second dielectric plate 2 adopt Taconic CER-10(tm), and its dielectric constant ε r =10, dielectric loss tanδ=0.035, first dielectric plate 1 thickness h=4mm, second dielectric plate 2 thickness t=3mm; patch array 4 is a 16x 16 patch array, row period pitch p1=14mm, column Periodic pitch p2=12mm; rectangular patch long side a=13mm, wide side b=11mm; aperture d=1mm of metallized through hole 5; gap length ls=100mm of gap floor 3, gap width ws=5mm; feeder 6 has a length lf=100mm and a width wf=5mm.

[0039] Effect of the present invention is further described below in conjunction with the simulation result of embodiment 1:

[0040] 1. Simulation content:

[0041] Ansys HFSS 16.0 is used to perform full-wave simulation on the simulation model of Example 1, and five working states of the antenna are obtained by controlling th...

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Abstract

The invention discloses a metasurface-based radiation pattern-reconfigurable antenna. The antenna comprises a second dielectric plate, a slot bottom plate and a first dielectric plate which are sequentially stacked; one surface of the first dielectric plate, which is far away from the slot bottom plate, is provided with a patch array comprising M rows and N columns; the patch array is composed ofM*N patches; a metallized through hole is formed in each of the patches; the metalized through holes run through the first dielectric plate and the slot bottom plate; switches are arranged between adjacent two rows of patches in the same column; the all switches in the same column form a switch group; all the switches in the same switch group are synchronously switched on and switched off; the first dielectric plate is provided with N switch groups; and one surface of the second dielectric plate, which is far away from the slot bottom plate, is provided with a feed line. The radiation pattern-reconfigurable antenna can be realized with no phase shifting systems required. The radiation pattern-reconfigurable antenna of the present invention has the advantages of a plurality of working states, small size, light weight, low loss, simple structure, good consistency and the like.

Description

technical field [0001] The invention relates to the field of microwave technology, and relates to a pattern reconfigurable antenna, in particular to a C-band metasurface-based pattern reconfigurable antenna. Background technique [0002] The rapid development of modern wireless communication technology has caused the increasing shortage of spectrum resources. How to effectively use limited spectrum resources and improve spectrum utilization has become an urgent problem to be solved. In order to meet the "flexible and changeable" antenna performance requirements of modern communication systems, tunable electromagnetic metamaterials can be reasonably combined with traditional antennas to form pattern reconfigurable antennas (Pattern Reconfigurable Antenna, PRA), through an external control system ( Electronic, mechanical and other means) to change the radiation characteristics of the antenna, specifically to control and change the radiation pattern of the antenna (including fo...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q3/24H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q3/247H01Q21/0006H01Q21/065
Inventor 巫钊吴伟张智林罗有焕
Owner YULIN NORMAL UNIVERSITY
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