Ultra wide band antenna based on fractal

An ultra-wideband antenna and fractal technology, which is applied to the antenna grounding device, the structural form of the radiating element, etc., can solve problems such as no public reports, and achieve the effects of good repeatability, high precision and simple structure

Active Publication Date: 2015-04-01
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention relates to a fractal-based ultra-wideband antenna and its fractal method. After literature search, there is no public report identical to the present invention

Method used

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  • Ultra wide band antenna based on fractal
  • Ultra wide band antenna based on fractal
  • Ultra wide band antenna based on fractal

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Embodiment Construction

[0021] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] A fractal-based ultra-wideband antenna of the present invention consists of a dielectric board 3, a radiating unit 2 and a feeding unit 4 printed on one side of the dielectric board and connected directly, and a grounding unit 6 printed on the other side of the dielectric board. ,in:

[0023] a. The radiation unit 2 is a connected metal patch formed by three iterations of fractal, and the slit 1 is etched on it;

[0024] b. The grounding unit 6 is a rectangular metal patch on which a rectangular groove 5 is etched;

[0025] The fractal method of the radiation element 2 in the fractal-based ultra-wideband antenna is:

[0026] a. cut off four isosceles right-angled triangles to the square radiation sheet 2, and the side length of the right-angled side of the triangle is 1 / 3rd of the square radiation sheet 2, thus completing the f...

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Abstract

The invention discloses an ultra wide band antenna based on fractal and a fractal method thereof and belongs to the technical field of wireless communication. The antenna comprises a dielectric-slab (3), as well as radiating elements (2) and a feed unit (4) which are directly connected with each other, and an earthing unit (6) in which an open slot (5) is formed. The fractal method of the radiating elements (2) comprises the steps that a, four isosceles right triangles are cut off from a square radiating sheet 2, and the side length of the right-angle side of each triangle is one third that of the square radiating sheet 2; b, 5 squares are marked off in the middle of the surplus structure after first fractal, the area of each square is one ninth that of the whole square radiating sheet (2) before fractal, an isosceles triangle is cut off from each corner of each square, and the right-angle side of each triangle is one third the side length of the square; and c, third iteration is continuously carried out on the surplus structure after secondary fractal according to the operation in the b step. The ultra wide band antenna based on fractal and the fractal method thereof have the advantages that an ultra wide band is formed, multifrequency work is realized, the directivity is good, the standing-wave ratio is small, and excellent impedance matching can be realized.

Description

Technical field: [0001] The invention relates to a fractal-based ultra-wideband antenna and a fractal method thereof, belonging to the technical field of wireless communication. Background technique: [0002] Since the U.S. Federal Communications Commission designated the 3.1GHz-10.6 GHz frequency band as an UWB system frequency band, industry and academia have invested a lot of research and effort in the field of UWB radio technology. As an important component of UWB systems, UWB antennas have attracted extensive research in terms of broadband impedance matching, stable radiation patterns, miniaturization, and low cost. [0003] Fractal is both a broadband method and a miniaturization method fractal. This concept originates from the fractal figure in geometry, and when it is applied to the antenna, the fractal pattern is applied to the radiation sheet or the ground plane of the antenna. The fractal structure has two characteristics, one is space filling and the other is s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48
Inventor 申东娅王光韬朱纪超张秀普帅新芳
Owner YUNNAN UNIV
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