Novel C-band microstrip antenna with negative permeability material

A negative magnetic permeability material, the technology of microstrip antenna, applied in the direction of antenna, antenna array, radiating element structure, etc., can solve the problems of low gain, narrow operating frequency band of microstrip antenna, and large influence on antenna performance, so as to improve the gain. , the effect of improving the signal receiving ability and transmitting ability

Inactive Publication Date: 2010-01-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the working frequency band of the microstrip antenna is narrow, the gain is low, the cross polarization is strong, the power capacity of a single antenna is small, the loss is larg

Method used

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  • Novel C-band microstrip antenna with negative permeability material
  • Novel C-band microstrip antenna with negative permeability material
  • Novel C-band microstrip antenna with negative permeability material

Examples

Experimental program
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Embodiment 1

[0017] Using circuit board etching technology to produce a microstrip antenna with a double-sided dendritic structure with a central operating frequency of 5.28GHz, such as figure 2 shown. image 3 and Figure 4 The front and rear views of the antenna are shown respectively. A polytetrafluoroethylene material (ε=2.65) with an area of ​​120mm×120mm 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 is 20.6mm×16.3mm. The metal grounding plate 3 is etched on one side, and the grounding plate is slightly larger than the radiation patch, measuring 30mm×30mm. The dendritic structure 4 is etched on both sides in the blank space around the radiation patch and the ground plane, and the dendritic structures on both sides are strictly aligned. For the microstrip antenna of this embodiment, the geometric dimensions of the dendritic structure are: the length of the...

Embodiment 2

[0019] Similar to Example 1, use circuit board etching technology to manufacture a microstrip antenna with a double-sided dendritic structure at a center operating frequency of 6.53 GHz, and select a polytetrafluoroethylene material with an area of ​​90 mm × 90 mm and a thickness of 1 mm (ε=2.65) As the dielectric substrate of the antenna, the size of the metal copper radiation patch on one side of the dielectric substrate is 16.8mm×12.9mm, and the metal ground plate is etched on the other side, and the ground plate is slightly larger than the radiation patch, which is 25mm× 25mm. The dendritic structure is etched on both sides in the blank space between the radiation patch and the ground plane, and the dendritic structures on both sides are strictly aligned. For the microstrip antenna of this embodiment, the geometric dimensions of the dendritic structure are: the length of the first-level branch a=2.7mm, the length of the second-level branch b=1.3mm, the length of the third-...

Embodiment 3

[0021] Similar to Example 1, use circuit board etching technology to manufacture a microstrip antenna with a double-sided dendritic structure at a center operating frequency of 7.12 GHz, and use an epoxy glass cloth material with an area of ​​85 mm × 85 mm and a thickness of 1 mm (ε=4.6) As the dielectric substrate of the antenna, the size of the metal copper radiation patch on one side of the dielectric substrate is 11.7mm×8.7mm, and the metal ground plate is etched on the other side, and the ground plate is slightly larger than the radiation patch, which is 18mm× 18mm. The dendritic structure is etched on both sides in the blank space between the radiation patch and the ground plane, and the dendritic structures on both sides are strictly aligned. For the microstrip antenna of this embodiment, the geometric dimensions of the dendritic structure are: the length of the first-level branch a=2.9mm, the length of the second-level branch b=1.5mm, the length of the third-level bran...

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Abstract

The invention relates to a novel C-band (4GHz-8GHz) microstrip antenna with a negative permeability material, in particular to a novel antenna with a negative permeability material with a two-sided dendritic structure. The microstrip antenna in the invention comprises a dielectric substrate, a metal radiation patch and a metal ground plate; wherein, an SMA connector connects the metal radiation patch and the metal ground plate and serves as a feed-in interface of radio wave signals of the antenna; dendritic structure cell arrays arranged periodically are etched at both sides of the space around the metal radiation patch and the metal ground plate. When microwaves enter vertically, the negative permeability effect generated by the two-sided dendritic structure can be adopted to improve the signal receiving and transmitting capabilities of the microstrip antenna and increase the antenna gain.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a new C-band (4GHz-8GHz) antenna which utilizes a double-sided dendritic structure negative magnetic permeability material to improve antenna gain. Background technique [0002] Matematerials is a general term for a class of artificial composite materials, and its current research focuses on EBG and LHM technologies. These materials are all synthetic materials, and they all show some phenomena that do not exist in nature in the electromagnetic field, such as frequency band gap and negative refractive index. When they are applied in the field of microwave and millimeter wave engineering, the performance of some equipment and devices can be significantly improved, such as increasing antenna gain, reducing inter-array coupling, manufacturing high-Q resonant cavities, and realizing perfect lenses. It can be said that the emergence of these artificial materials provides possible solutions to o...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H01Q21/00
Inventor 赵晓鹏纪宁朱忠奎史亚龙刘亚红
Owner NORTHWESTERN POLYTECHNICAL UNIV
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