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S waveband arborization left-handed material microstrip antenna

A technology of left-handed materials and microstrip antennas, applied in antennas, structural forms of radiation elements, electrical components, etc., can solve the problems of low gain, low radiation efficiency of ordinary microstrip antennas, and narrow frequency band, etc., and achieve the effect of simple process

Inactive Publication Date: 2009-09-23
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a left-handed material microstrip antenna for the shortcomings of ordinary microstrip antennas, such as low radiation efficiency, low gain, and narrow frequency band.

Method used

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  • S waveband arborization left-handed material microstrip antenna
  • S waveband arborization left-handed material microstrip antenna
  • S waveband arborization left-handed material microstrip antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Using circuit board etching technology, a dendritic structure left-handed material microstrip antenna with a center operating frequency of 2.95GHz is produced, such as Figure 4 shown. A polytetrafluoroethylene material (ε=2.65) with an area of ​​160mm×160mm and a thickness of 1.5mm is selected as the dielectric substrate 1 of the antenna, and the size of the metal copper radiation patch 2 on one side of the dielectric substrate 1 is 37mm×30mm, and on the other side It is entirely made of metal copper, as the ground plate 3, using coaxial feed, and the SMA coaxial 4 connector connects the metal radiation plate 2 and the metal ground plate 3, and serves as the signal feed source of the antenna. The metal copper dendritic structure unit array 5 is etched periodically around the radiation patch. For the microstrip antenna with a working frequency of 2.95 GHz in this embodiment, the geometric dimension of the dendritic structure is: the length of the primary branch L 1 =8....

Embodiment 2

[0018] Using circuit board etching technology, a dendritic structure left-handed material microstrip antenna with a central operating frequency of 2.6GHz is produced, such as Figure 4 shown. The epoxy glass cloth material (ε=4.55) with an area of ​​180mm×180mm and a thickness of 0.8mm is selected as the dielectric substrate 1 of the antenna. The size of the metal copper radiation patch 2 on one side of the dielectric substrate 1 is 43mm×35mm, and the other side is completely It is made of metal copper, used as the ground plate 3, and coaxial feed is used, and the SMA coaxial 4 connector connects the metal radiation plate 2 and the metal ground plate 3, and serves as the signal feed source of the antenna. The metal copper dendritic structure element array 5 is etched periodically around the radiation patch. For the microstrip antenna with a working frequency of 2.6 GHz in this embodiment, the geometric dimension of the dendritic structure is: the primary branch length L 1 =8....

Embodiment 3

[0020] Using circuit board etching technology, a dendritic structure left-handed material microstrip antenna with a center operating frequency of 3.4GHz is produced, such as Figure 4 shown. A polyethylene material (ε=2.3) with an area of ​​140mm×140mm and a thickness of 1.0mm is selected as the dielectric substrate 1 of the antenna. The size of the metal copper radiation patch 2 on one side of the dielectric substrate 1 is 33mm×26mm, and the other side is completely Metal copper, as the ground plate 3, adopts coaxial feed, and the SMA coaxial 4 connector connects the metal radiation plate 2 and the metal ground plate 3, and serves as the signal feed source of the antenna. The metal copper dendritic structure element array 5 is etched periodically around the radiation patch. For the microstrip antenna with a working frequency of 3.4 GHz in this embodiment, the geometric dimension of the dendritic structure is: the primary branch length L 1 =7.1, the length of the secondary br...

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Abstract

The invention relates to an S waveband (2 to 4 GHz) left-handed material microstrip antenna with an arborization structure. The antenna is formed by the following steps that: the left-handed material with the arborization structure is loaded on the periphery of a metal patch of the microstrip antenna; and the left-handed material with the arborization structure is etched on a substrate of the microstrip antenna by circuit board etching technology. The performance of the antenna is improved by the unique electromagnetic behavior of the left-handed material with the arborization structure. The left-handed material of the microstrip antenna with the arborization structure and the antenna have the same preparation method, and both adopt the circuit board etching technology; in addition, the left-handed material can be integrally formed with the microstrip antenna; and the microstrip antenna has simple preparation and low cost, and can be widely popularized and applied.

Description

technical field [0001] The invention relates to an S-band (2GHz-4GHz) microstrip antenna, in particular to a dendritic structure left-handed material microstrip antenna, which uses the singular electromagnetic properties of the left-handed material to improve the performance of the antenna. Background technique [0002] The microstrip antenna is composed of a dielectric substrate with a thickness much smaller than the wavelength and metal patches etched on both sides of it. It is fed by a coaxial line or a microstrip line, and passes through the gap between the patch and the ground plate. radiation. Microstrip antenna has the advantages of thin surface, small size, light weight, planar structure, and easy to conform to the surface of missiles, satellites and other carriers. It has been widely used in satellite communications, radar, and remote sensing. [0003] In recent years, the proposal of left-handed materials is expected to be applied to detectors, stealth materials, ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H05K3/02
Inventor 赵晓鹏史亚龙朱忠奎罗春荣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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