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Fractal tree-structured antenna with double-layer substrate

A technology of fractal tree structure and double-layer substrate, which is applied in the direction of antenna grounding device and radiation element structure, can solve the problems of low gain and radiation efficiency, and achieve the effect of good radiation characteristics, small size and light weight

Inactive Publication Date: 2016-04-20
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior to this, some small antennas with double-layer substrates have been designed and studied many times, but the gain and radiation efficiency are very low, so it is of great significance to further utilize its advantages and optimize its performance

Method used

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  • Fractal tree-structured antenna with double-layer substrate
  • Fractal tree-structured antenna with double-layer substrate
  • Fractal tree-structured antenna with double-layer substrate

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Choose glass fiber epoxy resin material with a dielectric constant of 4.4 to make the substrate. The upper substrate and the lower substrate have the same specification and size, the thickness is 1mm, and the length and width are both 45mm. The total length and total width of the intermediate transmission layer are both 45 mm, and each square has a side length of 4.75 mm. The coaxial feeder has a radius of 0.7mm and a length of 4mm, passing through the upper substrate, the lower substrate and the patch respectively, and is located 3.5mm below the center. The side length of the square patch is 26mm. The fractal tree structure slotted structure can be divided into four crosses, the length and width of each cross are 12mm, and the slot width is 0.5mm. The performance indicators of the fractal tree structure antenna with double-layer substrate are tested and analyzed by CST software, and the return loss curve obtained is shown in the attached Figure 4 As shown, it can b...

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Abstract

The invention discloses a fractal tree structure antenna with a double-layer substrate. It includes an upper substrate, a lower substrate, a middle transmission layer, a coaxial feeder, a square patch, and a metal grounding plate; the upper surface of the upper substrate is provided with a square patch, and the lower surface of the lower substrate is provided with a metal grounding plate; on the square patch There is a fractal tree structure slot; an intermediate transmission layer is provided between the upper substrate and the lower substrate, and the intermediate transmission layer is composed of 8×8 squares placed at intervals. The square patch and the metal grounding plate are connected through a coaxial feeder. The invention has the advantages of good radiation characteristics, simple structure, small volume, light weight, convenient manufacture and easy integration.

Description

Technical field [0001] The invention involves an antenna, especially a fractal tree structure antenna with a double -layer substrate. Background technique [0002] The antenna is an indispensable part of all wireless communication systems. It is responsible for transforming the signal sent by the transmitter into an electromagnetic wave to spread to the space, or to transmit the electromagnetic signal in the free space into a high -frequency signal for receiving the receiver.Realize the spatial signal exchange process of wireless communication.With the continuous development of wireless communication technology and the continuous progress of hardware research and development conditions, in order to better realize the transmission of wireless signals, higher requirements have also been put on the performance of the antenna. Under the current environment of wireless communication equipment widely used todayThe importance of antenna is increasing day by day. The research of various ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48
Inventor 李九生
Owner CHINA JILIANG UNIV